57997966 has 8 divisors (see below), whose sum is σ = 93689064. Its totient is φ = 26768280.

The previous prime is 57997943. The next prime is 57997987. The reversal of 57997966 is 66979975.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 57997966.

It is a congruent number.

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, 1115320 + ... + 1115371.

It is an arithmetic number, because the mean of its divisors is an integer number (11711133).

Almost surely, 2^57997966 is an apocalyptic number.

57997966 is a deficient number, since it is larger than the sum of its proper divisors (35691098).

57997966 is a wasteful number, since it uses less digits than its factorization.

57997966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230706.

The product of its digits is 6429780, while the sum is 58.

The square root of 57997966 is about 7615.6395660509. The cubic root of 57997966 is about 387.0831390886.

Subtracting 57997966 from its reverse (66979975), we obtain a square (8982009 = 2997²).

The spelling of 57997966 in words is "fifty-seven million, nine hundred ninety-seven thousand, nine hundred sixty-six".