870074057 has 4 divisors (see below), whose sum is σ = 879850260. Its totient is φ = 860297856.

The previous prime is 870074053. The next prime is 870074081. The reversal of 870074057 is 750470078.

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

It can be written as a sum of positive squares in 2 ways, for example, as 436768201 + 433305856 = 20899^2 + 20816^2 .

It is a cyclic number.

It is not a de Polignac number, because 870074057 - 2² = 870074053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 870074057.

It is not an unprimeable number, because it can be changed into a prime (870074053) 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, 4887968 + ... + 4888145.

It is an arithmetic number, because the mean of its divisors is an integer number (219962565).

Almost surely, 2^870074057 is an apocalyptic number.

It is an amenable number.

870074057 is a deficient number, since it is larger than the sum of its proper divisors (9776203).

870074057 is an equidigital number, since it uses as much as digits as its factorization.

870074057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9776202.

The product of its (nonzero) digits is 54880, while the sum is 38.

The square root of 870074057 is about 29497.0177645131. The cubic root of 870074057 is about 954.6673574451.

The spelling of 870074057 in words is "eight hundred seventy million, seventy-four thousand, fifty-seven".