690841092 has 24 divisors (see below), whose sum is σ = 1614256000. Its totient is φ = 229952736.

The previous prime is 690841057. The next prime is 690841141. The reversal of 690841092 is 290148096.

It is a super-2 number, since 2×690841092² = 954522828791504928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 690841092.

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, 32092 + ... + 49107.

Almost surely, 2^690841092 is an apocalyptic number.

It is an amenable number.

690841092 is an abundant number, since it is smaller than the sum of its proper divisors (923414908).

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

690841092 is a wasteful number, since it uses less digits than its factorization.

690841092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81915 (or 81913 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 690841092 is about 26283.8561097872. The cubic root of 690841092 is about 884.0144974861.

The spelling of 690841092 in words is "six hundred ninety million, eight hundred forty-one thousand, ninety-two".