70100639 has 16 divisors (see below), whose sum is σ = 85716288. Its totient is φ = 55959552.

The previous prime is 70100603. The next prime is 70100647. The reversal of 70100639 is 93600107.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 70100639 - 2¹⁶ = 70035103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70100339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8507 + ... + 14579.

It is an arithmetic number, because the mean of its divisors is an integer number (5357268).

Almost surely, 2^70100639 is an apocalyptic number.

70100639 is a deficient number, since it is larger than the sum of its proper divisors (15615649).

70100639 is a wasteful number, since it uses less digits than its factorization.

70100639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6194.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 70100639 is about 8372.6124357933. The cubic root of 70100639 is about 412.3259411342.

The spelling of 70100639 in words is "seventy million, one hundred thousand, six hundred thirty-nine".