731665704 has 96 divisors (see below), whose sum is σ = 2297856960. Its totient is φ = 190037760.

The previous prime is 731665691. The next prime is 731665717. The reversal of 731665704 is 407566137.

It is an interprime number because it is at equal distance from previous prime (731665691) and next prime (731665717).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2332 + ... + 38324.

It is an arithmetic number, because the mean of its divisors is an integer number (23936010).

Almost surely, 2^731665704 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 731665704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148928480).

731665704 is an abundant number, since it is smaller than the sum of its proper divisors (1566191256).

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

731665704 is a wasteful number, since it uses less digits than its factorization.

731665704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36031 (or 36016 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 731665704 is about 27049.3198435746. The cubic root of 731665704 is about 901.0956631255.

It can be divided in two parts, 731 and 665704, that added together give a triangular number (666435 = T₁₁₅₄).

The spelling of 731665704 in words is "seven hundred thirty-one million, six hundred sixty-five thousand, seven hundred four".