61655632 has 20 divisors (see below), whose sum is σ = 120557140. Its totient is φ = 30544128.

The previous prime is 61655623. The next prime is 61655639. The reversal of 61655632 is 23655616.

It can be written as a sum of positive squares in 2 ways, for example, as 56010256 + 5645376 = 7484^2 + 2376^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61655639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15933 + ... + 19420.

It is an arithmetic number, because the mean of its divisors is an integer number (6027857).

Almost surely, 2^61655632 is an apocalyptic number.

It is an amenable number.

61655632 is a deficient number, since it is larger than the sum of its proper divisors (58901508).

61655632 is a wasteful number, since it uses less digits than its factorization.

61655632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35470 (or 35464 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 61655632 is about 7852.1100348887. The cubic root of 61655632 is about 395.0550198422.

The spelling of 61655632 in words is "sixty-one million, six hundred fifty-five thousand, six hundred thirty-two".