60657661 has 2 divisors, whose sum is σ = 60657662. Its totient is φ = 60657660.

The previous prime is 60657637. The next prime is 60657703. The reversal of 60657661 is 16675606.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46172025 + 14485636 = 6795^2 + 3806^2 .

It is a cyclic number.

It is not a de Polignac number, because 60657661 - 2⁵ = 60657629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 60657661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60657631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30328830 + 30328831.

It is an arithmetic number, because the mean of its divisors is an integer number (30328831).

Almost surely, 2^60657661 is an apocalyptic number.

It is an amenable number.

60657661 is a deficient number, since it is larger than the sum of its proper divisors (1).

60657661 is an equidigital number, since it uses as much as digits as its factorization.

60657661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 60657661 is about 7788.3028318113. The cubic root of 60657661 is about 392.9119339432.

It can be divided in two parts, 60 and 657661, that added together give a square (657721 = 811²).

The spelling of 60657661 in words is "sixty million, six hundred fifty-seven thousand, six hundred sixty-one".