700728631 has 4 divisors (see below), whose sum is σ = 701755272. Its totient is φ = 699701992.

The previous prime is 700728629. The next prime is 700728667. The reversal of 700728631 is 136827007.

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

It is a cyclic number.

It is not a de Polignac number, because 700728631 - 2¹ = 700728629 is a prime.

It is a super-2 number, since 2×700728631² = 982041228606268322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (700728671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512296 + ... + 513661.

It is an arithmetic number, because the mean of its divisors is an integer number (175438818).

Almost surely, 2^700728631 is an apocalyptic number.

700728631 is a deficient number, since it is larger than the sum of its proper divisors (1026641).

700728631 is a wasteful number, since it uses less digits than its factorization.

700728631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026640.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 700728631 is about 26471.2793608469. The cubic root of 700728631 is about 888.2119684276.

The spelling of 700728631 in words is "seven hundred million, seven hundred twenty-eight thousand, six hundred thirty-one".