70138706 has 8 divisors (see below), whose sum is σ = 114772464. Its totient is φ = 31881220.

The previous prime is 70138703. The next prime is 70138723. The reversal of 70138706 is 60783107.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (70138703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1594040 + ... + 1594083.

It is an arithmetic number, because the mean of its divisors is an integer number (14346558).

Almost surely, 2^70138706 is an apocalyptic number.

70138706 is a deficient number, since it is larger than the sum of its proper divisors (44633758).

70138706 is a wasteful number, since it uses less digits than its factorization.

70138706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188136.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 70138706 is about 8374.8854320522. The cubic root of 70138706 is about 412.4005632372.

The spelling of 70138706 in words is "seventy million, one hundred thirty-eight thousand, seven hundred six".