690080064 has 28 divisors (see below), whose sum is σ = 1825837344. Its totient is φ = 230026624.

The previous prime is 690080051. The next prime is 690080093. The reversal of 690080064 is 460080096.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1796892 + ... + 1797275.

Almost surely, 2^690080064 is an apocalyptic number.

690080064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

690080064 is an abundant number, since it is smaller than the sum of its proper divisors (1135757280).

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

690080064 is a wasteful number, since it uses less digits than its factorization.

690080064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594182 (or 3594172 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 690080064 is about 26269.3750211154. The cubic root of 690080064 is about 883.6897691800.

The spelling of 690080064 in words is "six hundred ninety million, eighty thousand, sixty-four".