70683731 has 2 divisors, whose sum is σ = 70683732. Its totient is φ = 70683730.

The previous prime is 70683721. The next prime is 70683737. The reversal of 70683731 is 13738607.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70683731 - 2¹⁴ = 70667347 is a prime.

It is a super-2 number, since 2×70683731² = 9992379656160722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 70683691 and 70683700.

It is not a weakly prime, because it can be changed into another prime (70683737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35341865 + 35341866.

It is an arithmetic number, because the mean of its divisors is an integer number (35341866).

Almost surely, 2^70683731 is an apocalyptic number.

70683731 is a deficient number, since it is larger than the sum of its proper divisors (1).

70683731 is an equidigital number, since it uses as much as digits as its factorization.

70683731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 70683731 is about 8407.3617145928. The cubic root of 70683731 is about 413.4660182905.

The spelling of 70683731 in words is "seventy million, six hundred eighty-three thousand, seven hundred thirty-one".