652690 has 8 divisors (see below), whose sum is σ = 1174860. Its totient is φ = 261072.

The previous prime is 652667. The next prime is 652699. The reversal of 652690 is 96256.

It can be written as a sum of positive squares in 2 ways, for example, as 613089 + 39601 = 783^2 + 199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×652690² = 852008472200, which contains 22 as substring.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32625 + ... + 32644.

2⁶⁵²⁶⁹⁰ is an apocalyptic number.

652690 is a deficient number, since it is larger than the sum of its proper divisors (522170).

652690 is a wasteful number, since it uses less digits than its factorization.

652690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65276.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 652690 is about 807.8923195575. The cubic root of 652690 is about 86.7432426421.

The spelling of 652690 in words is "six hundred fifty-two thousand, six hundred ninety".