70623731 has 8 divisors (see below), whose sum is σ = 73833984. Its totient is φ = 67425160.

The previous prime is 70623697. The next prime is 70623733. The reversal of 70623731 is 13732607.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70623731 is a prime.

It is a super-2 number, since 2×70623731² = 9975422760720722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70623694 and 70623703.

It is not an unprimeable number, because it can be changed into a prime (70623733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10886 + ... + 16116.

It is an arithmetic number, because the mean of its divisors is an integer number (9229248).

Almost surely, 2^70623731 is an apocalyptic number.

70623731 is a deficient number, since it is larger than the sum of its proper divisors (3210253).

70623731 is a wasteful number, since it uses less digits than its factorization.

70623731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5841.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 70623731 is about 8403.7926557002. The cubic root of 70623731 is about 413.3489947384.

The spelling of 70623731 in words is "seventy million, six hundred twenty-three thousand, seven hundred thirty-one".