61475790 has 32 divisors (see below), whose sum is σ = 152303616. Its totient is φ = 15864480.

The previous prime is 61475779. The next prime is 61475797. The reversal of 61475790 is 9757416.

It is a super-2 number, since 2×61475790² = 7558545512248200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61475797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32122 + ... + 33981.

It is an arithmetic number, because the mean of its divisors is an integer number (4759488).

Almost surely, 2^61475790 is an apocalyptic number.

61475790 is an abundant number, since it is smaller than the sum of its proper divisors (90827826).

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

61475790 is a wasteful number, since it uses less digits than its factorization.

61475790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66144.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 61475790 is about 7840.6498455166. The cubic root of 61475790 is about 394.6705365776.

The spelling of 61475790 in words is "sixty-one million, four hundred seventy-five thousand, seven hundred ninety".