70621992 has 48 divisors (see below), whose sum is σ = 218593440. Its totient is φ = 20177568.

The previous prime is 70621963. The next prime is 70622017. The reversal of 70621992 is 29912607.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69558 + ... + 70565.

It is an arithmetic number, because the mean of its divisors is an integer number (4554030).

Almost surely, 2^70621992 is an apocalyptic number.

70621992 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

70621992 is an abundant number, since it is smaller than the sum of its proper divisors (147971448).

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

70621992 is a wasteful number, since it uses less digits than its factorization.

70621992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140142 (or 140135 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 70621992 is about 8403.6891898737. The cubic root of 70621992 is about 413.3456020176.

The spelling of 70621992 in words is "seventy million, six hundred twenty-one thousand, nine hundred ninety-two".