690986072 has 32 divisors (see below), whose sum is σ = 1558617600. Its totient is φ = 280550304.

The previous prime is 690986071. The next prime is 690986077. The reversal of 690986072 is 270689096.

690986072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690986071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323648 + ... + 325775.

It is an arithmetic number, because the mean of its divisors is an integer number (48706800).

Almost surely, 2^690986072 is an apocalyptic number.

It is an amenable number.

690986072 is an abundant number, since it is smaller than the sum of its proper divisors (867631528).

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

690986072 is a wasteful number, since it uses less digits than its factorization.

690986072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649455 (or 649451 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 690986072 is about 26286.6139318095. The cubic root of 690986072 is about 884.0763329593.

The spelling of 690986072 in words is "six hundred ninety million, nine hundred eighty-six thousand, seventy-two".