612992940 has 72 divisors (see below), whose sum is σ = 1996615152. Its totient is φ = 140112000.

The previous prime is 612992921. The next prime is 612992951. The reversal of 612992940 is 49299216.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 612992892 and 612992901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101311 + ... + 107190.

It is an arithmetic number, because the mean of its divisors is an integer number (27730766).

Almost surely, 2^612992940 is an apocalyptic number.

612992940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

612992940 is an abundant number, since it is smaller than the sum of its proper divisors (1383622212).

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

612992940 is a wasteful number, since it uses less digits than its factorization.

612992940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208527 (or 208518 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 612992940 is about 24758.6942305122. The cubic root of 612992940 is about 849.4773903966.

The spelling of 612992940 in words is "six hundred twelve million, nine hundred ninety-two thousand, nine hundred forty".