689899392 has 192 divisors, whose sum is σ = 2443764960. Its totient is φ = 181923840.

The previous prime is 689899349. The next prime is 689899393. The reversal of 689899392 is 293998986.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×689899392² = 951922342163939328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689899393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101542 + ... + 108122.

Almost surely, 2^689899392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689899392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1221882480).

689899392 is an abundant number, since it is smaller than the sum of its proper divisors (1753865568).

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

689899392 is a wasteful number, since it uses less digits than its factorization.

689899392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6621 (or 6606 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 63.

The square root of 689899392 is about 26265.9359627636. The cubic root of 689899392 is about 883.6126419297.

The spelling of 689899392 in words is "six hundred eighty-nine million, eight hundred ninety-nine thousand, three hundred ninety-two".