70615973 has 2 divisors, whose sum is σ = 70615974. Its totient is φ = 70615972.

The previous prime is 70615939. The next prime is 70616023. The reversal of 70615973 is 37951607.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61984129 + 8631844 = 7873^2 + 2938^2 .

It is a cyclic number.

It is not a de Polignac number, because 70615973 - 2⁸ = 70615717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70615273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35307986 + 35307987.

It is an arithmetic number, because the mean of its divisors is an integer number (35307987).

Almost surely, 2^70615973 is an apocalyptic number.

It is an amenable number.

70615973 is a deficient number, since it is larger than the sum of its proper divisors (1).

70615973 is an equidigital number, since it uses as much as digits as its factorization.

70615973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 70615973 is about 8403.3310657144. The cubic root of 70615973 is about 413.3338587547. Note that the first 3 decimals are identical.

The spelling of 70615973 in words is "seventy million, six hundred fifteen thousand, nine hundred seventy-three".