690948972 has 72 divisors (see below), whose sum is σ = 1998936576. Its totient is φ = 197131104.

The previous prime is 690948967. The next prime is 690948997. The reversal of 690948972 is 279849096.

690948972 is a `hidden beast` number, since 6 + 90 + 9 + 489 + 72 = 666.

690948972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 227053 + ... + 230075.

It is an arithmetic number, because the mean of its divisors is an integer number (27763008).

Almost surely, 2^690948972 is an apocalyptic number.

It is an amenable number.

690948972 is an abundant number, since it is smaller than the sum of its proper divisors (1307987604).

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

690948972 is a wasteful number, since it uses less digits than its factorization.

690948972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3947 (or 3942 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 690948972 is about 26285.9082399677. The cubic root of 690948972 is about 884.0605102482.

The spelling of 690948972 in words is "six hundred ninety million, nine hundred forty-eight thousand, nine hundred seventy-two".