56691368 has 8 divisors (see below), whose sum is σ = 106296330. Its totient is φ = 28345680.

The previous prime is 56691361. The next prime is 56691377. The reversal of 56691368 is 86319665.

It can be written as a sum of positive squares in only one way, i.e., 55920484 + 770884 = 7478^2 + 878^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×56691368² = 6427822411422848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56691361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3543203 + ... + 3543218.

Almost surely, 2^56691368 is an apocalyptic number.

It is an amenable number.

56691368 is a deficient number, since it is larger than the sum of its proper divisors (49604962).

56691368 is a wasteful number, since it uses less digits than its factorization.

56691368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7086427 (or 7086423 counting only the distinct ones).

The product of its digits is 233280, while the sum is 44.

The square root of 56691368 is about 7529.3670384701. The cubic root of 56691368 is about 384.1542529877.

The spelling of 56691368 in words is "fifty-six million, six hundred ninety-one thousand, three hundred sixty-eight".