61634916 has 36 divisors (see below), whose sum is σ = 178057152. Its totient is φ = 17609904.

The previous prime is 61634897. The next prime is 61634927. The reversal of 61634916 is 61943616.

61634916 is a `hidden beast` number, since 6 + 1 + 634 + 9 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122040 + ... + 122543.

It is an arithmetic number, because the mean of its divisors is an integer number (4946032).

Almost surely, 2^61634916 is an apocalyptic number.

It is an amenable number.

61634916 is an abundant number, since it is smaller than the sum of its proper divisors (116422236).

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

61634916 is a wasteful number, since it uses less digits than its factorization.

61634916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244600 (or 244595 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 61634916 is about 7850.7907881945. The cubic root of 61634916 is about 395.0107693480.

The spelling of 61634916 in words is "sixty-one million, six hundred thirty-four thousand, nine hundred sixteen".