740664 has 56 divisors (see below), whose sum is σ = 2098560. Its totient is φ = 244944.

The previous prime is 740659. The next prime is 740671. The reversal of 740664 is 466047.

740664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

740664 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 5769 + ... + 5895.

2⁷⁴⁰⁶⁶⁴ 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 740664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1049280).

740664 is an abundant number, since it is smaller than the sum of its proper divisors (1357896).

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

740664 is a wasteful number, since it uses less digits than its factorization.

740664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 740664 is about 860.6183823275. The cubic root of 740664 is about 90.4774625156.

The spelling of 740664 in words is "seven hundred forty thousand, six hundred sixty-four".