70292639 has 2 divisors, whose sum is σ = 70292640. Its totient is φ = 70292638.

The previous prime is 70292597. The next prime is 70292641. The reversal of 70292639 is 93629207.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70292639 is a prime.

Together with 70292641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70292939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35146319 + 35146320.

It is an arithmetic number, because the mean of its divisors is an integer number (35146320).

Almost surely, 2^70292639 is an apocalyptic number.

70292639 is a deficient number, since it is larger than the sum of its proper divisors (1).

70292639 is an equidigital number, since it uses as much as digits as its factorization.

70292639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 70292639 is about 8384.0705507528. The cubic root of 70292639 is about 412.7020404806.

The spelling of 70292639 in words is "seventy million, two hundred ninety-two thousand, six hundred thirty-nine".