690579960 has 128 divisors (see below), whose sum is σ = 2374272000. Its totient is φ = 157409280.

The previous prime is 690579959. The next prime is 690579997. The reversal of 690579960 is 69975096.

690579960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 376245 + ... + 378075.

It is an arithmetic number, because the mean of its divisors is an integer number (18549000).

Almost surely, 2^690579960 is an apocalyptic number.

690579960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690579960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1187136000).

690579960 is an abundant number, since it is smaller than the sum of its proper divisors (1683692040).

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

690579960 is a wasteful number, since it uses less digits than its factorization.

690579960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301 (or 2297 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 51.

The square root of 690579960 is about 26278.8881043320. Note that the first 3 decimals coincide. The cubic root of 690579960 is about 883.9031001531.

The spelling of 690579960 in words is "six hundred ninety million, five hundred seventy-nine thousand, nine hundred sixty".