679698450 has 54 divisors (see below), whose sum is σ = 1827610239. Its totient is φ = 181105440.

The previous prime is 679698449. The next prime is 679698469. The reversal of 679698450 is 54896976.

It can be written as a sum of positive squares in 5 ways, for example, as 636098841 + 43599609 = 25221^2 + 6603^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=18435.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 552436 + ... + 553664.

Almost surely, 2^679698450 is an apocalyptic number.

679698450 is an abundant number, since it is smaller than the sum of its proper divisors (1147911789).

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

679698450 is a wasteful number, since it uses less digits than its factorization.

679698450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476 (or 1239 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 679698450 is about 26071.0270223480. The cubic root of 679698450 is about 879.2359285470.

The spelling of 679698450 in words is "six hundred seventy-nine million, six hundred ninety-eight thousand, four hundred fifty".