690748992 has 56 divisors (see below), whose sum is σ = 2030679200. Its totient is φ = 230249088.

The previous prime is 690748973. The next prime is 690748997. The reversal of 690748992 is 299847096.

690748992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (690748997) 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, 198142 + ... + 201597.

Almost surely, 2^690748992 is an apocalyptic number.

It is an amenable number.

690748992 is an abundant number, since it is smaller than the sum of its proper divisors (1339930208).

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

690748992 is a wasteful number, since it uses less digits than its factorization.

690748992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399760 (or 399744 counting only the distinct ones).

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

The square root of 690748992 is about 26282.1040253630. The cubic root of 690748992 is about 883.9752113876.

The spelling of 690748992 in words is "six hundred ninety million, seven hundred forty-eight thousand, nine hundred ninety-two".