690075980 has 48 divisors (see below), whose sum is σ = 1603203840. Its totient is φ = 247396800.

The previous prime is 690075931. The next prime is 690076003. The reversal of 690075980 is 89570096.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6470 + ... + 37709.

It is an arithmetic number, because the mean of its divisors is an integer number (33400080).

Almost surely, 2^690075980 is an apocalyptic number.

It is an amenable number.

690075980 is an abundant number, since it is smaller than the sum of its proper divisors (913127860).

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

690075980 is a wasteful number, since it uses less digits than its factorization.

690075980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44270 (or 44268 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 690075980 is about 26269.2972878987. The cubic root of 690075980 is about 883.6880259059.

The spelling of 690075980 in words is "six hundred ninety million, seventy-five thousand, nine hundred eighty".