740736668 has 48 divisors (see below), whose sum is σ = 1521537024. Its totient is φ = 308914560.

The previous prime is 740736613. The next prime is 740736671. The reversal of 740736668 is 866637047.

It is a super-2 number, since 2×740736668² = 1097381622639484448, which contains 22 as substring.

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, 696305 + ... + 697367.

It is an arithmetic number, because the mean of its divisors is an integer number (31698688).

Almost surely, 2^740736668 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 740736668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (760768512).

740736668 is an abundant number, since it is smaller than the sum of its proper divisors (780800356).

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

740736668 is a wasteful number, since it uses less digits than its factorization.

740736668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722 (or 1720 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 47.

The square root of 740736668 is about 27216.4778764630. The cubic root of 740736668 is about 904.8042139274.

The spelling of 740736668 in words is "seven hundred forty million, seven hundred thirty-six thousand, six hundred sixty-eight".