764136 has 24 divisors (see below), whose sum is σ = 2069730. Its totient is φ = 254688.

The previous prime is 764131. The next prime is 764143. The reversal of 764136 is 631467.

764136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 396900 + 367236 = 630^2 + 606^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (764131) by changing a digit.

764136 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5235 + ... + 5378.

2⁷⁶⁴¹³⁶ is an apocalyptic number.

It is an amenable number.

764136 is an abundant number, since it is smaller than the sum of its proper divisors (1305594).

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

764136 is a wasteful number, since it uses less digits than its factorization.

764136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10625 (or 10618 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 764136 is about 874.1487287642. The cubic root of 764136 is about 91.4232986170.

It can be divided in two parts, 764 and 136, that added together give a square (900 = 30²).

The spelling of 764136 in words is "seven hundred sixty-four thousand, one hundred thirty-six".