70890884 has 24 divisors (see below), whose sum is σ = 133165368. Its totient is φ = 32901120.

The previous prime is 70890871. The next prime is 70890917. The reversal of 70890884 is 48809807.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2464900 + 68425984 = 1570^2 + 8272^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2177 + ... + 12104.

It is an arithmetic number, because the mean of its divisors is an integer number (5548557).

Almost surely, 2^70890884 is an apocalyptic number.

It is an amenable number.

70890884 is a deficient number, since it is larger than the sum of its proper divisors (62274484).

70890884 is a wasteful number, since it uses less digits than its factorization.

70890884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14375 (or 14373 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 70890884 is about 8419.6724401844. The cubic root of 70890884 is about 413.8695396694.

The spelling of 70890884 in words is "seventy million, eight hundred ninety thousand, eight hundred eighty-four".