57072679 has 4 divisors (see below), whose sum is σ = 58149576. Its totient is φ = 55995784.

The previous prime is 57072649. The next prime is 57072731. The reversal of 57072679 is 97627075.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57072679 - 2¹³ = 57064487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57072619) 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, 538369 + ... + 538474.

It is an arithmetic number, because the mean of its divisors is an integer number (14537394).

Almost surely, 2^57072679 is an apocalyptic number.

57072679 is a deficient number, since it is larger than the sum of its proper divisors (1076897).

57072679 is a wasteful number, since it uses less digits than its factorization.

57072679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076896.

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 57072679 is about 7554.6461862883. The cubic root of 57072679 is about 385.0136139561.

The spelling of 57072679 in words is "fifty-seven million, seventy-two thousand, six hundred seventy-nine".