61564926 has 8 divisors (see below), whose sum is σ = 123129864. Its totient is φ = 20521640.

The previous prime is 61564913. The next prime is 61564961. The reversal of 61564926 is 62946516.

It is a sphenic number, since it is the product of 3 distinct primes.

61564926 is an admirable number.

It is a super-2 number, since 2×61564926² = 7580480226770952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5130405 + ... + 5130416.

It is an arithmetic number, because the mean of its divisors is an integer number (15391233).

Almost surely, 2^61564926 is an apocalyptic number.

61564926 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61564926 is a wasteful number, since it uses less digits than its factorization.

61564926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10260826.

The product of its digits is 77760, while the sum is 39.

The square root of 61564926 is about 7846.3320092894. The cubic root of 61564926 is about 394.8611935502.

The spelling of 61564926 in words is "sixty-one million, five hundred sixty-four thousand, nine hundred twenty-six".