612090690 has 16 divisors (see below), whose sum is σ = 1469017728. Its totient is φ = 163224176.

The previous prime is 612090649. The next prime is 612090701. The reversal of 612090690 is 96090216.

It is a happy number.

It is a super-2 number, since 2×612090690² = 749310025569352200, which contains 22 as substring.

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, 10201482 + ... + 10201541.

It is an arithmetic number, because the mean of its divisors is an integer number (91813608).

Almost surely, 2^612090690 is an apocalyptic number.

612090690 is an abundant number, since it is smaller than the sum of its proper divisors (856927038).

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

612090690 is a wasteful number, since it uses less digits than its factorization.

612090690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20403033.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 612090690 is about 24740.4666487922. The cubic root of 612090690 is about 849.0604104345.

The spelling of 612090690 in words is "six hundred twelve million, ninety thousand, six hundred ninety".