57477966 has 96 divisors (see below), whose sum is σ = 148646400. Its totient is φ = 14427072.

The previous prime is 57477947. The next prime is 57477967. The reversal of 57477966 is 66977475.

Its product of digits (2222640) is a multiple of the sum of its prime factors (270).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57477967) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 288735 + ... + 288933.

It is an arithmetic number, because the mean of its divisors is an integer number (1548400).

Almost surely, 2^57477966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57477966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74323200).

57477966 is an abundant number, since it is smaller than the sum of its proper divisors (91168434).

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

57477966 is a wasteful number, since it uses less digits than its factorization.

57477966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 247 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 51.

The square root of 57477966 is about 7581.4224259040. The cubic root of 57477966 is about 385.9228236624.

The spelling of 57477966 in words is "fifty-seven million, four hundred seventy-seven thousand, nine hundred sixty-six".