690618912 has 48 divisors (see below), whose sum is σ = 1861880832. Its totient is φ = 223983360.

The previous prime is 690618889. The next prime is 690618947. The reversal of 690618912 is 219816096.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×690618912² = 953908963224127488, 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, 93664 + ... + 100767.

It is an arithmetic number, because the mean of its divisors is an integer number (38789184).

Almost surely, 2^690618912 is an apocalyptic number.

It is an amenable number.

690618912 is an abundant number, since it is smaller than the sum of its proper divisors (1171261920).

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

690618912 is a wasteful number, since it uses less digits than its factorization.

690618912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194481 (or 194473 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 690618912 is about 26279.6292211287. The cubic root of 690618912 is about 883.9197186227.

The spelling of 690618912 in words is "six hundred ninety million, six hundred eighteen thousand, nine hundred twelve".