61564632 has 32 divisors (see below), whose sum is σ = 154150080. Its totient is φ = 20489760.

The previous prime is 61564619. The next prime is 61564661. The reversal of 61564632 is 23646516.

It is a junction number, because it is equal to n+sod(n) for n = 61564593 and 61564602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17883 + ... + 21045.

It is an arithmetic number, because the mean of its divisors is an integer number (4817190).

Almost surely, 2^61564632 is an apocalyptic number.

It is an amenable number.

61564632 is an abundant number, since it is smaller than the sum of its proper divisors (92585448).

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

61564632 is a wasteful number, since it uses less digits than its factorization.

61564632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3983 (or 3979 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 61564632 is about 7846.3132743984. The cubic root of 61564632 is about 394.8605650030.

The spelling of 61564632 in words is "sixty-one million, five hundred sixty-four thousand, six hundred thirty-two".