36870857 has 4 divisors (see below), whose sum is σ = 36914640. Its totient is φ = 36827076.

The previous prime is 36870829. The next prime is 36870871. The reversal of 36870857 is 75807863.

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 36870857 - 2¹⁴ = 36854473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36870157) 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, 20603 + ... + 22320.

It is an arithmetic number, because the mean of its divisors is an integer number (9228660).

Almost surely, 2^36870857 is an apocalyptic number.

It is an amenable number.

36870857 is a deficient number, since it is larger than the sum of its proper divisors (43783).

36870857 is an equidigital number, since it uses as much as digits as its factorization.

36870857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43782.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 36870857 is about 6072.1377619418. The cubic root of 36870857 is about 332.8340457313.

The spelling of 36870857 in words is "thirty-six million, eight hundred seventy thousand, eight hundred fifty-seven".