73857857 has 4 divisors (see below), whose sum is σ = 73875456. Its totient is φ = 73840260.

The previous prime is 73857827. The next prime is 73857859. The reversal of 73857857 is 75875837.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73857857 - 2⁸ = 73857601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73857859) 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, 1568 + ... + 12254.

It is an arithmetic number, because the mean of its divisors is an integer number (18468864).

Almost surely, 2^73857857 is an apocalyptic number.

It is an amenable number.

73857857 is a deficient number, since it is larger than the sum of its proper divisors (17599).

73857857 is a wasteful number, since it uses less digits than its factorization.

73857857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17598.

The product of its digits is 1646400, while the sum is 50.

The square root of 73857857 is about 8594.0594017030. The cubic root of 73857857 is about 419.5646604055.

The spelling of 73857857 in words is "seventy-three million, eight hundred fifty-seven thousand, eight hundred fifty-seven".