689051492 has 24 divisors (see below), whose sum is σ = 1281887040. Its totient is φ = 323157600.

The previous prime is 689051483. The next prime is 689051507. The reversal of 689051492 is 294150986.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37208 + ... + 52559.

It is an arithmetic number, because the mean of its divisors is an integer number (53411960).

Almost surely, 2^689051492 is an apocalyptic number.

It is an amenable number.

689051492 is a deficient number, since it is larger than the sum of its proper divisors (592835548).

689051492 is a wasteful number, since it uses less digits than its factorization.

689051492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89891 (or 89889 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 689051492 is about 26249.7903229721. The cubic root of 689051492 is about 883.2505010577.

The spelling of 689051492 in words is "six hundred eighty-nine million, fifty-one thousand, four hundred ninety-two".