690159158 has 12 divisors (see below), whose sum is σ = 1120998708. Its totient is φ = 318534840.

The previous prime is 690159143. The next prime is 690159179. The reversal of 690159158 is 851951096.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1020608 + ... + 1021283.

It is an arithmetic number, because the mean of its divisors is an integer number (93416559).

Almost surely, 2^690159158 is an apocalyptic number.

690159158 is a deficient number, since it is larger than the sum of its proper divisors (430839550).

690159158 is a wasteful number, since it uses less digits than its factorization.

690159158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041919 (or 2041906 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 44.

The square root of 690159158 is about 26270.8804192018. The cubic root of 690159158 is about 883.7235294600.

The spelling of 690159158 in words is "six hundred ninety million, one hundred fifty-nine thousand, one hundred fifty-eight".