690408004 has 96 divisors (see below), whose sum is σ = 1476905472. Its totient is φ = 278208000.

The previous prime is 690407989. The next prime is 690408007. The reversal of 690408004 is 400804096.

It is not an unprimeable number, because it can be changed into a prime (690408007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1639714 + ... + 1640134.

It is an arithmetic number, because the mean of its divisors is an integer number (15384432).

Almost surely, 2^690408004 is an apocalyptic number.

It is an amenable number.

690408004 is an abundant number, since it is smaller than the sum of its proper divisors (786497468).

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

690408004 is a wasteful number, since it uses less digits than its factorization.

690408004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 690408004 is about 26275.6161488175. The cubic root of 690408004 is about 883.8297294273.

The spelling of 690408004 in words is "six hundred ninety million, four hundred eight thousand, four".