70904639 has 8 divisors (see below), whose sum is σ = 76580112. Its totient is φ = 65260800.

The previous prime is 70904629. The next prime is 70904641. The reversal of 70904639 is 93640907.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70904639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70904629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3137 + ... + 12314.

It is an arithmetic number, because the mean of its divisors is an integer number (9572514).

Almost surely, 2^70904639 is an apocalyptic number.

70904639 is a deficient number, since it is larger than the sum of its proper divisors (5675473).

70904639 is a wasteful number, since it uses less digits than its factorization.

70904639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15817.

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

The square root of 70904639 is about 8420.4892375681. The cubic root of 70904639 is about 413.8963057218.

The spelling of 70904639 in words is "seventy million, nine hundred four thousand, six hundred thirty-nine".