764347540 has 48 divisors (see below), whose sum is σ = 1854062784. Its totient is φ = 261593600.

The previous prime is 764347531. The next prime is 764347541. The reversal of 764347540 is 45743467.

It is a junction number, because it is equal to n+sod(n) for n = 764347493 and 764347502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764347541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98446 + ... + 105925.

It is an arithmetic number, because the mean of its divisors is an integer number (38626308).

Almost surely, 2^764347540 is an apocalyptic number.

It is an amenable number.

764347540 is an abundant number, since it is smaller than the sum of its proper divisors (1089715244).

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

764347540 is a wasteful number, since it uses less digits than its factorization.

764347540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204408 (or 204406 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 40.

The square root of 764347540 is about 27646.8359853347. The cubic root of 764347540 is about 914.3173424466.

The spelling of 764347540 in words is "seven hundred sixty-four million, three hundred forty-seven thousand, five hundred forty".