61677912 has 32 divisors (see below), whose sum is σ = 157478400. Its totient is φ = 20121504.

The previous prime is 61677901. The next prime is 61677923. The reversal of 61677912 is 21977616.

It is an interprime number because it is at equal distance from previous prime (61677901) and next prime (61677923).

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, 26212 + ... + 28467.

It is an arithmetic number, because the mean of its divisors is an integer number (4921200).

Almost surely, 2^61677912 is an apocalyptic number.

It is an amenable number.

61677912 is an abundant number, since it is smaller than the sum of its proper divisors (95800488).

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

61677912 is a wasteful number, since it uses less digits than its factorization.

61677912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54735 (or 54731 counting only the distinct ones).

The product of its digits is 31752, while the sum is 39.

The square root of 61677912 is about 7853.5286336780. The cubic root of 61677912 is about 395.1026000634.

The spelling of 61677912 in words is "sixty-one million, six hundred seventy-seven thousand, nine hundred twelve".