61663532 has 12 divisors (see below), whose sum is σ = 123327120. Its totient is φ = 26427216.

The previous prime is 61663513. The next prime is 61663543. The reversal of 61663532 is 23536616.

61663532 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1101107 + ... + 1101162.

It is an arithmetic number, because the mean of its divisors is an integer number (10277260).

Almost surely, 2^61663532 is an apocalyptic number.

It is an amenable number.

61663532 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.

61663532 is a wasteful number, since it uses less digits than its factorization.

61663532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202280 (or 2202278 counting only the distinct ones).

The product of its digits is 19440, while the sum is 32.

The square root of 61663532 is about 7852.6130682722. The cubic root of 61663532 is about 395.0718920579.

The spelling of 61663532 in words is "sixty-one million, six hundred sixty-three thousand, five hundred thirty-two".