690042308 has 24 divisors (see below), whose sum is σ = 1288691712. Its totient is φ = 322164864.

The previous prime is 690042307. The next prime is 690042319. The reversal of 690042308 is 803240096.

It is not an unprimeable number, because it can be changed into a prime (690042307) 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, 31316 + ... + 48587.

It is an arithmetic number, because the mean of its divisors is an integer number (53695488).

Almost surely, 2^690042308 is an apocalyptic number.

690042308 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

690042308 is a deficient number, since it is larger than the sum of its proper divisors (598649404).

690042308 is a wasteful number, since it uses less digits than its factorization.

690042308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80051 (or 80049 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 690042308 is about 26268.6563797999. The cubic root of 690042308 is about 883.6736525963.

The spelling of 690042308 in words is "six hundred ninety million, forty-two thousand, three hundred eight".