690848656 has 15 divisors (see below), whose sum is σ = 1338723003. Its totient is φ = 345371760.

The previous prime is 690848623. The next prime is 690848657. The reversal of 690848656 is 656848096.

The square root of 690848656 is 26284.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690848657) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 101851 + ... + 108421.

Almost surely, 2^690848656 is an apocalyptic number.

690848656 is the 26284-th square number.

It is an amenable number.

690848656 is a deficient number, since it is larger than the sum of its proper divisors (647874347).

690848656 is an frugal number, since it uses more digits than its factorization.

690848656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13150 (or 6573 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 52.

The cubic root of 690848656 is about 884.0177238245.

The spelling of 690848656 in words is "six hundred ninety million, eight hundred forty-eight thousand, six hundred fifty-six".