856970355 has 64 divisors (see below), whose sum is σ = 1455169536. Its totient is φ = 430080000.

The previous prime is 856970351. The next prime is 856970369. The reversal of 856970355 is 553079658.

It is not a de Polignac number, because 856970355 - 2² = 856970351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (856970351) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3334387 + ... + 3334643.

It is an arithmetic number, because the mean of its divisors is an integer number (22737024).

Almost surely, 2^856970355 is an apocalyptic number.

856970355 is a deficient number, since it is larger than the sum of its proper divisors (598199181).

856970355 is a wasteful number, since it uses less digits than its factorization.

856970355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468.

The product of its (nonzero) digits is 1134000, while the sum is 48.

The square root of 856970355 is about 29274.0560052754. The cubic root of 856970355 is about 949.8505231117.

The spelling of 856970355 in words is "eight hundred fifty-six million, nine hundred seventy thousand, three hundred fifty-five".