749465640 has 384 divisors, whose sum is σ = 3198873600. Its totient is φ = 147432960.

The previous prime is 749465627. The next prime is 749465677. The reversal of 749465640 is 46564947.

749465640 is a `hidden beast` number, since 7 + 49 + 46 + 564 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 525969 + ... + 527391.

It is an arithmetic number, because the mean of its divisors is an integer number (8330400).

Almost surely, 2^749465640 is an apocalyptic number.

749465640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749465640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1599436800).

749465640 is an abundant number, since it is smaller than the sum of its proper divisors (2449407960).

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

749465640 is a wasteful number, since it uses less digits than its factorization.

749465640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477 (or 1470 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 749465640 is about 27376.3701026999. The cubic root of 749465640 is about 908.3444681368.

The spelling of 749465640 in words is "seven hundred forty-nine million, four hundred sixty-five thousand, six hundred forty".