70138707 has 16 divisors (see below), whose sum is σ = 97804800. Its totient is φ = 44625152.

The previous prime is 70138703. The next prime is 70138723. The reversal of 70138707 is 70783107.

It is not a de Polignac number, because 70138707 - 2² = 70138703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70138703) 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, 40483 + ... + 42179.

It is an arithmetic number, because the mean of its divisors is an integer number (6112800).

Almost surely, 2^70138707 is an apocalyptic number.

70138707 is a deficient number, since it is larger than the sum of its proper divisors (27666093).

70138707 is a wasteful number, since it uses less digits than its factorization.

70138707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322.

The product of its (nonzero) digits is 8232, while the sum is 33.

The square root of 70138707 is about 8374.8854917545. The cubic root of 70138707 is about 412.4005651971.

The spelling of 70138707 in words is "seventy million, one hundred thirty-eight thousand, seven hundred seven".