1672605 has 48 divisors (see below), whose sum is σ = 3294720. Its totient is φ = 777600.

The previous prime is 1672603. The next prime is 1672607. The reversal of 1672605 is 5062761.

It is an interprime number because it is at equal distance from previous prime (1672603) and next prime (1672607).

It is not a de Polignac number, because 1672605 - 2¹ = 1672603 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15291 + ... + 15399.

It is an arithmetic number, because the mean of its divisors is an integer number (68640).

2^1672605 is an apocalyptic number.

1672605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1672605 is a deficient number, since it is larger than the sum of its proper divisors (1622115).

1672605 is a wasteful number, since it uses less digits than its factorization.

1672605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 1672605 is about 1293.2923103460. The cubic root of 1672605 is about 118.7037566943.

It can be divided in two parts, 167 and 2605, that added together give a palindrome (2772).

The spelling of 1672605 in words is "one million, six hundred seventy-two thousand, six hundred five".