1061620 has 24 divisors (see below), whose sum is σ = 2548224. Its totient is φ = 363936.

The previous prime is 1061617. The next prime is 1061623. The reversal of 1061620 is 261601.

1061620 = 259² + 260² + ... + 273².

It is an interprime number because it is at equal distance from previous prime (1061617) and next prime (1061623).

It is a super-2 number, since 2×1061620² = 2254074048800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1061594 and 1061603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3652 + ... + 3931.

It is an arithmetic number, because the mean of its divisors is an integer number (106176).

2^1061620 is an apocalyptic number.

1061620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061620 is an abundant number, since it is smaller than the sum of its proper divisors (1486604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1061620 is a wasteful number, since it uses less digits than its factorization.

1061620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7599 (or 7597 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1061620 is about 1030.3494552820. The cubic root of 1061620 is about 102.0131983434.

It can be divided in two parts, 1061 and 620, that added together give a square (1681 = 41²).

The spelling of 1061620 in words is "one million, sixty-one thousand, six hundred twenty".