70992980 has 12 divisors (see below), whose sum is σ = 149085300. Its totient is φ = 28397184.

The previous prime is 70992967. The next prime is 70992991. The reversal of 70992980 is 8929907.

It can be written as a sum of positive squares in 2 ways, for example, as 40500496 + 30492484 = 6364^2 + 5522^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1774805 + ... + 1774844.

It is an arithmetic number, because the mean of its divisors is an integer number (12423775).

Almost surely, 2^70992980 is an apocalyptic number.

It is an amenable number.

70992980 is an abundant number, since it is smaller than the sum of its proper divisors (78092320).

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

70992980 is a wasteful number, since it uses less digits than its factorization.

70992980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549658 (or 3549656 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 70992980 is about 8425.7332025172. The cubic root of 70992980 is about 414.0681272903.

The spelling of 70992980 in words is "seventy million, nine hundred ninety-two thousand, nine hundred eighty".