690307072 has 120 divisors (see below), whose sum is σ = 1702835456. Its totient is φ = 272498688.

The previous prime is 690307067. The next prime is 690307147. The reversal of 690307072 is 270703096.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1490713 + ... + 1491175.

Almost surely, 2^690307072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690307072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851417728).

690307072 is an abundant number, since it is smaller than the sum of its proper divisors (1012528384).

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

690307072 is an equidigital number, since it uses as much as digits as its factorization.

690307072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 690307072 is about 26273.6954385941. The cubic root of 690307072 is about 883.7866577705.

The spelling of 690307072 in words is "six hundred ninety million, three hundred seven thousand, seventy-two".