667232765 has 16 divisors (see below), whose sum is σ = 810072576. Its totient is φ = 527544000.

The previous prime is 667232759. The next prime is 667232771. The reversal of 667232765 is 567232766.

It is an interprime number because it is at equal distance from previous prime (667232759) and next prime (667232771).

It is not a de Polignac number, because 667232765 - 2²⁸ = 398797309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435050 + ... + 436580.

It is an arithmetic number, because the mean of its divisors is an integer number (50629536).

Almost surely, 2^667232765 is an apocalyptic number.

It is an amenable number.

667232765 is a deficient number, since it is larger than the sum of its proper divisors (142839811).

667232765 is a wasteful number, since it uses less digits than its factorization.

667232765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500.

The product of its digits is 635040, while the sum is 44.

The square root of 667232765 is about 25830.8490956066. The cubic root of 667232765 is about 873.8276610034.

Subtracting from 667232765 its reverse (567232766), we obtain a palindrome (99999999).

The spelling of 667232765 in words is "six hundred sixty-seven million, two hundred thirty-two thousand, seven hundred sixty-five".