70612639 has 2 divisors, whose sum is σ = 70612640. Its totient is φ = 70612638.

The previous prime is 70612631. The next prime is 70612667. The reversal of 70612639 is 93621607.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70612639 - 2³ = 70612631 is a prime.

It is a super-2 number, since 2×70612639² = 9972289573088642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70612631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35306319 + 35306320.

It is an arithmetic number, because the mean of its divisors is an integer number (35306320).

Almost surely, 2^70612639 is an apocalyptic number.

70612639 is a deficient number, since it is larger than the sum of its proper divisors (1).

70612639 is an equidigital number, since it uses as much as digits as its factorization.

70612639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 70612639 is about 8403.1326896581. The cubic root of 70612639 is about 413.3273537261.

The spelling of 70612639 in words is "seventy million, six hundred twelve thousand, six hundred thirty-nine".