652779 has 10 divisors (see below), whose sum is σ = 975260. Its totient is φ = 435132.

The previous prime is 652759. The next prime is 652787. The reversal of 652779 is 977256.

It is not a de Polignac number, because 652779 - 2⁵ = 652747 is a prime.

It is a super-2 number, since 2×652779² = 852240845682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (652739) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3949 + ... + 4110.

It is an arithmetic number, because the mean of its divisors is an integer number (97526).

2⁶⁵²⁷⁷⁹ is an apocalyptic number.

652779 is a deficient number, since it is larger than the sum of its proper divisors (322481).

652779 is an equidigital number, since it uses as much as digits as its factorization.

652779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8071 (or 8062 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 652779 is about 807.9473992779. The cubic root of 652779 is about 86.7471851966.

It can be divided in two parts, 652 and 779, that added together give a triangular number (1431 = T₅₃).

The spelling of 652779 in words is "six hundred fifty-two thousand, seven hundred seventy-nine".