70630256 has 20 divisors (see below), whose sum is σ = 138105000. Its totient is φ = 34990272.

The previous prime is 70630247. The next prime is 70630289. The reversal of 70630256 is 65203607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18506 + ... + 21993.

It is an arithmetic number, because the mean of its divisors is an integer number (6905250).

Almost surely, 2^70630256 is an apocalyptic number.

It is an amenable number.

70630256 is a deficient number, since it is larger than the sum of its proper divisors (67474744).

70630256 is a wasteful number, since it uses less digits than its factorization.

70630256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40616 (or 40610 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 70630256 is about 8404.1808643080. The cubic root of 70630256 is about 413.3617242610.

The spelling of 70630256 in words is "seventy million, six hundred thirty thousand, two hundred fifty-six".