61626465 has 24 divisors (see below), whose sum is σ = 107001960. Its totient is φ = 32811264.

The previous prime is 61626449. The next prime is 61626469. The reversal of 61626465 is 56462616.

It is a happy number.

61626465 is a `hidden beast` number, since 6 + 1 + 6 + 2 + 646 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2782224 + 58844241 = 1668^2 + 7671^2 .

It is not a de Polignac number, because 61626465 - 2⁴ = 61626449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61626469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50199 + ... + 51411.

It is an arithmetic number, because the mean of its divisors is an integer number (4458415).

Almost surely, 2^61626465 is an apocalyptic number.

It is an amenable number.

61626465 is a deficient number, since it is larger than the sum of its proper divisors (45375495).

61626465 is a wasteful number, since it uses less digits than its factorization.

61626465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353 (or 2350 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 61626465 is about 7850.2525437084. The cubic root of 61626465 is about 394.9927147083.

The spelling of 61626465 in words is "sixty-one million, six hundred twenty-six thousand, four hundred sixty-five".