1715722645 has 48 divisors (see below), whose sum is σ = 2557619712. Its totient is φ = 1081866240.

The previous prime is 1715722643. The next prime is 1715722649. The reversal of 1715722645 is 5462275171.

It is not a de Polignac number, because 1715722645 - 2¹ = 1715722643 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1715722598 and 1715722607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1715722643) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2549029 + ... + 2549701.

It is an arithmetic number, because the mean of its divisors is an integer number (53283744).

Almost surely, 2^1715722645 is an apocalyptic number.

It is an amenable number.

1715722645 is a deficient number, since it is larger than the sum of its proper divisors (841897067).

1715722645 is a wasteful number, since it uses less digits than its factorization.

1715722645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142 (or 1129 counting only the distinct ones).

The product of its digits is 117600, while the sum is 40.

The square root of 1715722645 is about 41421.2825127373. The cubic root of 1715722645 is about 1197.1512622719.

The spelling of 1715722645 in words is "one billion, seven hundred fifteen million, seven hundred twenty-two thousand, six hundred forty-five".