734705664 has 192 divisors, whose sum is σ = 2443633920. Its totient is φ = 190709760.

The previous prime is 734705651. The next prime is 734705681. The reversal of 734705664 is 466507437.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472312 + ... + 473864.

It is an arithmetic number, because the mean of its divisors is an integer number (12727260).

Almost surely, 2^734705664 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 734705664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1221816960).

734705664 is an abundant number, since it is smaller than the sum of its proper divisors (1708928256).

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

734705664 is a wasteful number, since it uses less digits than its factorization.

734705664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596 (or 1576 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 42.

The square root of 734705664 is about 27105.4545064273. The cubic root of 734705664 is about 902.3419106514.

The spelling of 734705664 in words is "seven hundred thirty-four million, seven hundred five thousand, six hundred sixty-four".