690934898 has 4 divisors (see below), whose sum is σ = 1036402350. Its totient is φ = 345467448.

The previous prime is 690934877. The next prime is 690934901. The reversal of 690934898 is 898439096.

690934898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 409131529 + 281803369 = 20227^2 + 16787^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172733723 + ... + 172733726.

Almost surely, 2^690934898 is an apocalyptic number.

690934898 is a deficient number, since it is larger than the sum of its proper divisors (345467452).

690934898 is a wasteful number, since it uses less digits than its factorization.

690934898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345467451.

The product of its (nonzero) digits is 3359232, while the sum is 56.

The square root of 690934898 is about 26285.6405286232. The cubic root of 690934898 is about 884.0545077055.

The spelling of 690934898 in words is "six hundred ninety million, nine hundred thirty-four thousand, eight hundred ninety-eight".