856973662 has 4 divisors (see below), whose sum is σ = 1285460496. Its totient is φ = 428486830.

The previous prime is 856973657. The next prime is 856973669. The reversal of 856973662 is 266379658.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856973669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214243414 + ... + 214243417.

It is an arithmetic number, because the mean of its divisors is an integer number (321365124).

Almost surely, 2^856973662 is an apocalyptic number.

856973662 is a deficient number, since it is larger than the sum of its proper divisors (428486834).

856973662 is a wasteful number, since it uses less digits than its factorization.

856973662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428486833.

The product of its digits is 3265920, while the sum is 52.

The square root of 856973662 is about 29274.1124886819. The cubic root of 856973662 is about 949.8517449165.

The spelling of 856973662 in words is "eight hundred fifty-six million, nine hundred seventy-three thousand, six hundred sixty-two".