61604452 has 24 divisors (see below), whose sum is σ = 132687296. Its totient is φ = 24370848.

The previous prime is 61604407. The next prime is 61604467. The reversal of 61604452 is 25440616.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 61604452.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84258 + ... + 84985.

Almost surely, 2^61604452 is an apocalyptic number.

It is an amenable number.

61604452 is an abundant number, since it is smaller than the sum of its proper divisors (71082844).

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

61604452 is a wasteful number, since it uses less digits than its factorization.

61604452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169267 (or 169265 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 61604452 is about 7848.8503616772. The cubic root of 61604452 is about 394.9456785845.

The spelling of 61604452 in words is "sixty-one million, six hundred four thousand, four hundred fifty-two".