690897625 has 32 divisors (see below), whose sum is σ = 943488000. Its totient is φ = 500944000.

The previous prime is 690897617. The next prime is 690897637. The reversal of 690897625 is 526798096.

It is a happy number.

It is not a de Polignac number, because 690897625 - 2³ = 690897617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 658101 + ... + 659149.

It is an arithmetic number, because the mean of its divisors is an integer number (29484000).

Almost surely, 2^690897625 is an apocalyptic number.

It is an amenable number.

690897625 is a deficient number, since it is larger than the sum of its proper divisors (252590375).

690897625 is a wasteful number, since it uses less digits than its factorization.

690897625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554 (or 1544 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 690897625 is about 26284.9315197891. The cubic root of 690897625 is about 884.0386104257.

The spelling of 690897625 in words is "six hundred ninety million, eight hundred ninety-seven thousand, six hundred twenty-five".