746734640 has 40 divisors (see below), whose sum is σ = 1778511168. Its totient is φ = 291407360.

The previous prime is 746734633. The next prime is 746734643. The reversal of 746734640 is 46437647.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×746734640² = 1115225245151859200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (746734643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110552 + ... + 117111.

Almost surely, 2^746734640 is an apocalyptic number.

It is an amenable number.

746734640 is an abundant number, since it is smaller than the sum of its proper divisors (1031776528).

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

746734640 is a wasteful number, since it uses less digits than its factorization.

746734640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227717 (or 227711 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 41.

The square root of 746734640 is about 27326.4457988960. The cubic root of 746734640 is about 907.2398108645.

The spelling of 746734640 in words is "seven hundred forty-six million, seven hundred thirty-four thousand, six hundred forty".