61677760 has 28 divisors (see below), whose sum is σ = 146870928. Its totient is φ = 24670976.

The previous prime is 61677757. The next prime is 61677767. The reversal of 61677760 is 6777616.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (61677767) 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, 96052 + ... + 96691.

Almost surely, 2^61677760 is an apocalyptic number.

It is an amenable number.

61677760 is an abundant number, since it is smaller than the sum of its proper divisors (85193168).

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

61677760 is a wasteful number, since it uses less digits than its factorization.

61677760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192760 (or 192750 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 61677760 is about 7853.5189564933. The cubic root of 61677760 is about 395.1022754975.

The spelling of 61677760 in words is "sixty-one million, six hundred seventy-seven thousand, seven hundred sixty".