856632345 has 32 divisors (see below), whose sum is σ = 1383540480. Its totient is φ = 452582400.

The previous prime is 856632323. The next prime is 856632353. The reversal of 856632345 is 543236658.

It is not a de Polignac number, because 856632345 - 2¹⁴ = 856615961 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 856632297 and 856632306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1425045 + ... + 1425645.

It is an arithmetic number, because the mean of its divisors is an integer number (43235640).

Almost surely, 2^856632345 is an apocalyptic number.

It is an amenable number.

856632345 is a deficient number, since it is larger than the sum of its proper divisors (526908135).

856632345 is a wasteful number, since it uses less digits than its factorization.

856632345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345.

The product of its digits is 518400, while the sum is 42.

The square root of 856632345 is about 29268.2822352115. The cubic root of 856632345 is about 949.7256252884.

The spelling of 856632345 in words is "eight hundred fifty-six million, six hundred thirty-two thousand, three hundred forty-five".