746989640 has 32 divisors (see below), whose sum is σ = 1734946560. Its totient is φ = 289156800.

The previous prime is 746989613. The next prime is 746989687. The reversal of 746989640 is 46989647.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299966 + ... + 302445.

It is an arithmetic number, because the mean of its divisors is an integer number (54217080).

Almost surely, 2^746989640 is an apocalyptic number.

It is an amenable number.

746989640 is an abundant number, since it is smaller than the sum of its proper divisors (987956920).

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

746989640 is a wasteful number, since it uses less digits than its factorization.

746989640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602453 (or 602449 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 53.

The square root of 746989640 is about 27331.1112104869. Note that the first 3 decimals coincide. The cubic root of 746989640 is about 907.3430692423.

The spelling of 746989640 in words is "seven hundred forty-six million, nine hundred eighty-nine thousand, six hundred forty".