707507138 has 8 divisors (see below), whose sum is σ = 1142896188. Its totient is φ = 326541744.

The previous prime is 707507137. The next prime is 707507153. The reversal of 707507138 is 831705707.

707507138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 675844009 + 31663129 = 25997^2 + 5627^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (707507137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13605881 + ... + 13605932.

Almost surely, 2^707507138 is an apocalyptic number.

707507138 is a deficient number, since it is larger than the sum of its proper divisors (435389050).

707507138 is a wasteful number, since it uses less digits than its factorization.

707507138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27211828.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 707507138 is about 26599.0063348239. The cubic root of 707507138 is about 891.0668257430.

The spelling of 707507138 in words is "seven hundred seven million, five hundred seven thousand, one hundred thirty-eight".