690716594 has 4 divisors (see below), whose sum is σ = 1036074894. Its totient is φ = 345358296.

The previous prime is 690716591. The next prime is 690716623. The reversal of 690716594 is 495617096.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 365383225 + 325333369 = 19115^2 + 18037^2 .

It is not an unprimeable number, because it can be changed into a prime (690716591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172679147 + ... + 172679150.

Almost surely, 2^690716594 is an apocalyptic number.

690716594 is a deficient number, since it is larger than the sum of its proper divisors (345358300).

690716594 is a wasteful number, since it uses less digits than its factorization.

690716594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345358299.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 690716594 is about 26281.4876671774. The cubic root of 690716594 is about 883.9613908938.

The spelling of 690716594 in words is "six hundred ninety million, seven hundred sixteen thousand, five hundred ninety-four".