739681656 has 288 divisors, whose sum is σ = 2382987600. Its totient is φ = 190417920.

The previous prime is 739681651. The next prime is 739681667. The reversal of 739681656 is 656186937.

Its product of digits (1632960) is a multiple of the sum of its prime divisors (105).

It is a junction number, because it is equal to n+sod(n) for n = 739681599 and 739681608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (739681651) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 18040996 + ... + 18041036.

Almost surely, 2^739681656 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 739681656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1191493800).

739681656 is an abundant number, since it is smaller than the sum of its proper divisors (1643305944).

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

739681656 is a wasteful number, since it uses less digits than its factorization.

739681656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 105 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The square root of 739681656 is about 27197.0891089469. The cubic root of 739681656 is about 904.3744467790.

The spelling of 739681656 in words is "seven hundred thirty-nine million, six hundred eighty-one thousand, six hundred fifty-six".