856762201 has 4 divisors (see below), whose sum is σ = 874991232. Its totient is φ = 838533172.

The previous prime is 856762171. The next prime is 856762211. The reversal of 856762201 is 102267658.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 102267658 = 2 ⋅51133829.

It is a cyclic number.

It is not a de Polignac number, because 856762201 - 2⁵ = 856762169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856762211) 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, 9114445 + ... + 9114538.

It is an arithmetic number, because the mean of its divisors is an integer number (218747808).

Almost surely, 2^856762201 is an apocalyptic number.

It is an amenable number.

856762201 is a deficient number, since it is larger than the sum of its proper divisors (18229031).

856762201 is a wasteful number, since it uses less digits than its factorization.

856762201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18229030.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 856762201 is about 29270.5005252729. The cubic root of 856762201 is about 949.7736121680.

The spelling of 856762201 in words is "eight hundred fifty-six million, seven hundred sixty-two thousand, two hundred one".