61930566 has 24 divisors (see below), whose sum is σ = 134329104. Its totient is φ = 20621040.

The previous prime is 61930543. The next prime is 61930567. The reversal of 61930566 is 66503916.

61930566 is a `hidden beast` number, since 6 + 1 + 93 + 0 + 566 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 61930566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61930567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27856 + ... + 29996.

It is an arithmetic number, because the mean of its divisors is an integer number (5597046).

Almost surely, 2^61930566 is an apocalyptic number.

61930566 is an abundant number, since it is smaller than the sum of its proper divisors (72398538).

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

61930566 is a wasteful number, since it uses less digits than its factorization.

61930566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756 (or 3753 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 61930566 is about 7869.5975754800. The cubic root of 61930566 is about 395.6413572596.

The spelling of 61930566 in words is "sixty-one million, nine hundred thirty thousand, five hundred sixty-six".