70727631 has 16 divisors (see below), whose sum is σ = 101713920. Its totient is φ = 43457760.

The previous prime is 70727627. The next prime is 70727639. The reversal of 70727631 is 13672707.

It is not a de Polignac number, because 70727631 - 2² = 70727627 is a prime.

It is a super-2 number, since 2×70727631² = 10004795573744322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70727592 and 70727601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70727639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39330 + ... + 41088.

It is an arithmetic number, because the mean of its divisors is an integer number (6357120).

Almost surely, 2^70727631 is an apocalyptic number.

70727631 is a deficient number, since it is larger than the sum of its proper divisors (30986289).

70727631 is a wasteful number, since it uses less digits than its factorization.

70727631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806.

The product of its (nonzero) digits is 12348, while the sum is 33.

The square root of 70727631 is about 8409.9721164817. The cubic root of 70727631 is about 413.5515985765.

The spelling of 70727631 in words is "seventy million, seven hundred twenty-seven thousand, six hundred thirty-one".