690181068 has 24 divisors (see below), whose sum is σ = 1613268720. Its totient is φ = 229653760.

The previous prime is 690181067. The next prime is 690181069. The reversal of 690181068 is 860181096.

It is an interprime number because it is at equal distance from previous prime (690181067) and next prime (690181069).

It is not an unprimeable number, because it can be changed into a prime (690181067) 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, 43713 + ... + 57368.

It is an arithmetic number, because the mean of its divisors is an integer number (67219530).

Almost surely, 2^690181068 is an apocalyptic number.

It is an amenable number.

690181068 is an abundant number, since it is smaller than the sum of its proper divisors (923087652).

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

690181068 is a wasteful number, since it uses less digits than its factorization.

690181068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101657 (or 101655 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 690181068 is about 26271.2974175239. The cubic root of 690181068 is about 883.7328810119.

The spelling of 690181068 in words is "six hundred ninety million, one hundred eighty-one thousand, sixty-eight".