690676494 has 16 divisors (see below), whose sum is σ = 1381619280. Its totient is φ = 230181120.

The previous prime is 690676471. The next prime is 690676517. The reversal of 690676494 is 494676096.

It is an interprime number because it is at equal distance from previous prime (690676471) and next prime (690676517).

It is a congruent number.

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, 42654 + ... + 56574.

It is an arithmetic number, because the mean of its divisors is an integer number (86351205).

Almost surely, 2^690676494 is an apocalyptic number.

690676494 is an abundant number, since it is smaller than the sum of its proper divisors (690942786).

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

690676494 is a wasteful number, since it uses less digits than its factorization.

690676494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22195.

The product of its (nonzero) digits is 1959552, while the sum is 51.

The square root of 690676494 is about 26280.7247616956. The cubic root of 690676494 is about 883.9442842454.

The spelling of 690676494 in words is "six hundred ninety million, six hundred seventy-six thousand, four hundred ninety-four".