764140752 has 120 divisors (see below), whose sum is σ = 2274390144. Its totient is φ = 238666752.

The previous prime is 764140721. The next prime is 764140757. The reversal of 764140752 is 257041467.

764140752 is a `hidden beast` number, since 7 + 641 + 4 + 0 + 7 + 5 + 2 = 666.

It is a super-2 number, since 2×764140752² = 1167822177734251008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764140757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 692233 + ... + 693335.

Almost surely, 2^764140752 is an apocalyptic number.

764140752 is a gapful number since it is divisible by the number (72) 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 764140752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1137195072).

764140752 is an abundant number, since it is smaller than the sum of its proper divisors (1510249392).

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

764140752 is a wasteful number, since it uses less digits than its factorization.

764140752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417 (or 1408 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 764140752 is about 27643.0959192345. The cubic root of 764140752 is about 914.2348813070.

The spelling of 764140752 in words is "seven hundred sixty-four million, one hundred forty thousand, seven hundred fifty-two".