652501661 has 8 divisors (see below), whose sum is σ = 746163264. Its totient is φ = 558951840.

The previous prime is 652501621. The next prime is 652501679. The reversal of 652501661 is 166105256.

652501661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652501661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652501621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15035 + ... + 39128.

It is an arithmetic number, because the mean of its divisors is an integer number (93270408).

Almost surely, 2^652501661 is an apocalyptic number.

It is an amenable number.

652501661 is a deficient number, since it is larger than the sum of its proper divisors (93661603).

652501661 is a wasteful number, since it uses less digits than its factorization.

652501661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55891.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 652501661 is about 25544.1120612951. The cubic root of 652501661 is about 867.3489835038.

The spelling of 652501661 in words is "six hundred fifty-two million, five hundred one thousand, six hundred sixty-one".