856703630 has 16 divisors (see below), whose sum is σ = 1542646080. Its totient is φ = 342552672.

The previous prime is 856703621. The next prime is 856703657. The reversal of 856703630 is 36307658.

It is a super-2 number, since 2×856703630² = 1467882219310353800, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14636 + ... + 43904.

It is an arithmetic number, because the mean of its divisors is an integer number (96415380).

Almost surely, 2^856703630 is an apocalyptic number.

It is a pronic number, being equal to 29269×29270.

856703630 is a deficient number, since it is larger than the sum of its proper divisors (685942450).

856703630 is a wasteful number, since it uses less digits than its factorization.

856703630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32203.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 856703630 is about 29269.4999957293. The cubic root of 856703630 is about 949.7519684891.

The spelling of 856703630 in words is "eight hundred fifty-six million, seven hundred three thousand, six hundred thirty".