689374690 has 8 divisors (see below), whose sum is σ = 1240874460. Its totient is φ = 275749872.

The previous prime is 689374649. The next prime is 689374723. The reversal of 689374690 is 96473986.

It can be written as a sum of positive squares in 2 ways, for example, as 651219361 + 38155329 = 25519^2 + 6177^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×689374690² = 950474926425192200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34468725 + ... + 34468744.

Almost surely, 2^689374690 is an apocalyptic number.

689374690 is a deficient number, since it is larger than the sum of its proper divisors (551499770).

689374690 is a wasteful number, since it uses less digits than its factorization.

689374690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68937476.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 689374690 is about 26255.9458028082. The cubic root of 689374690 is about 883.3885750034.

The spelling of 689374690 in words is "six hundred eighty-nine million, three hundred seventy-four thousand, six hundred ninety".