61564496 has 20 divisors (see below), whose sum is σ = 136321632. Its totient is φ = 26384736.

The previous prime is 61564487. The next prime is 61564499. The reversal of 61564496 is 69446516.

61564496 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61564499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274730 + ... + 274953.

Almost surely, 2^61564496 is an apocalyptic number.

It is an amenable number.

61564496 is an abundant number, since it is smaller than the sum of its proper divisors (74757136).

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

61564496 is a wasteful number, since it uses less digits than its factorization.

61564496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549698 (or 549692 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 61564496 is about 7846.3046079030. The cubic root of 61564496 is about 394.8602742459.

The spelling of 61564496 in words is "sixty-one million, five hundred sixty-four thousand, four hundred ninety-six".