61100657 has 4 divisors (see below), whose sum is σ = 61705716. Its totient is φ = 60495600.

The previous prime is 61100629. The next prime is 61100687. The reversal of 61100657 is 75600116.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37442161 + 23658496 = 6119^2 + 4864^2 .

It is a cyclic number.

It is not a de Polignac number, because 61100657 - 2⁸ = 61100401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61100617) 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, 302378 + ... + 302579.

It is an arithmetic number, because the mean of its divisors is an integer number (15426429).

Almost surely, 2^61100657 is an apocalyptic number.

It is an amenable number.

61100657 is a deficient number, since it is larger than the sum of its proper divisors (605059).

61100657 is a wasteful number, since it uses less digits than its factorization.

61100657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605058.

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

The square root of 61100657 is about 7816.6909239140. The cubic root of 61100657 is about 393.8661217264.

The spelling of 61100657 in words is "sixty-one million, one hundred thousand, six hundred fifty-seven".