56321667 has 6 divisors (see below), whose sum is σ = 81353532. Its totient is φ = 37547772.

The previous prime is 56321647. The next prime is 56321693. The reversal of 56321667 is 76612365.

56321667 is a `hidden beast` number, since 5 + 632 + 16 + 6 + 7 = 666.

It is not a de Polignac number, because 56321667 - 2¹¹ = 56319619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56321627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3128973 + ... + 3128990.

It is an arithmetic number, because the mean of its divisors is an integer number (13558922).

Almost surely, 2^56321667 is an apocalyptic number.

56321667 is a deficient number, since it is larger than the sum of its proper divisors (25031865).

56321667 is a wasteful number, since it uses less digits than its factorization.

56321667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6257969 (or 6257966 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 56321667 is about 7504.7762791438. The cubic root of 56321667 is about 383.3173703918.

The spelling of 56321667 in words is "fifty-six million, three hundred twenty-one thousand, six hundred sixty-seven".