652691 has 4 divisors (see below), whose sum is σ = 702912. Its totient is φ = 602472.

The previous prime is 652667. The next prime is 652699. The reversal of 652691 is 196256.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 652691 - 2⁶ = 652627 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 652691.

It is not an unprimeable number, because it can be changed into a prime (652699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25091 + ... + 25116.

It is an arithmetic number, because the mean of its divisors is an integer number (175728).

2⁶⁵²⁶⁹¹ is an apocalyptic number.

652691 is a deficient number, since it is larger than the sum of its proper divisors (50221).

652691 is a wasteful number, since it uses less digits than its factorization.

652691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50220.

The product of its digits is 3240, while the sum is 29.

The square root of 652691 is about 807.8929384516. The cubic root of 652691 is about 86.7432869424.

The spelling of 652691 in words is "six hundred fifty-two thousand, six hundred ninety-one".