512217690 has 16 divisors (see below), whose sum is σ = 1229322528. Its totient is φ = 136591376.

The previous prime is 512217683. The next prime is 512217697. The reversal of 512217690 is 96712215.

It is an interprime number because it is at equal distance from previous prime (512217683) and next prime (512217697).

It is a super-2 number, since 2×512217690² = 524733923897872200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (512217697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8536932 + ... + 8536991.

It is an arithmetic number, because the mean of its divisors is an integer number (76832658).

Almost surely, 2^512217690 is an apocalyptic number.

512217690 is an abundant number, since it is smaller than the sum of its proper divisors (717104838).

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

512217690 is a wasteful number, since it uses less digits than its factorization.

512217690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17073933.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 512217690 is about 22632.2268016207. The cubic root of 512217690 is about 800.1133641433.

The spelling of 512217690 in words is "five hundred twelve million, two hundred seventeen thousand, six hundred ninety".