70639038 has 24 divisors (see below), whose sum is σ = 155338248. Its totient is φ = 23194512.

The previous prime is 70639027. The next prime is 70639039. The reversal of 70639038 is 83093607.

It is a junction number, because it is equal to n+sod(n) for n = 70638993 and 70639011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70639039) 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 11 ways as a sum of consecutive naturals, for example, 28081 + ... + 30492.

It is an arithmetic number, because the mean of its divisors is an integer number (6472427).

Almost surely, 2^70639038 is an apocalyptic number.

70639038 is an abundant number, since it is smaller than the sum of its proper divisors (84699210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70639038 is a wasteful number, since it uses less digits than its factorization.

70639038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58648 (or 58645 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 70639038 is about 8404.7033261145. The cubic root of 70639038 is about 413.3788556927.

The spelling of 70639038 in words is "seventy million, six hundred thirty-nine thousand, thirty-eight".