612993290 has 32 divisors (see below), whose sum is σ = 1358017920. Its totient is φ = 194001984.

The previous prime is 612993289. The next prime is 612993323. The reversal of 612993290 is 92399216.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335900 + ... + 337719.

It is an arithmetic number, because the mean of its divisors is an integer number (42438060).

Almost surely, 2^612993290 is an apocalyptic number.

612993290 is an abundant number, since it is smaller than the sum of its proper divisors (745024630).

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

612993290 is a wasteful number, since it uses less digits than its factorization.

612993290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673646.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 612993290 is about 24758.7012987354. The cubic root of 612993290 is about 849.4775520717.

The spelling of 612993290 in words is "six hundred twelve million, nine hundred ninety-three thousand, two hundred ninety".