657100061 has 4 divisors (see below), whose sum is σ = 662116224. Its totient is φ = 652083900.

The previous prime is 657100027. The next prime is 657100097. The reversal of 657100061 is 160001756.

657100061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-657100061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 657100061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657105061) 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, 2507885 + ... + 2508146.

It is an arithmetic number, because the mean of its divisors is an integer number (165529056).

Almost surely, 2^657100061 is an apocalyptic number.

It is an amenable number.

657100061 is a deficient number, since it is larger than the sum of its proper divisors (5016163).

657100061 is a wasteful number, since it uses less digits than its factorization.

657100061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016162.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 657100061 is about 25633.9630373456. The cubic root of 657100061 is about 869.3817164309.

The spelling of 657100061 in words is "six hundred fifty-seven million, one hundred thousand, sixty-one".