61600657 has 2 divisors, whose sum is σ = 61600658. Its totient is φ = 61600656.

The previous prime is 61600631. The next prime is 61600699. The reversal of 61600657 is 75600616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59043856 + 2556801 = 7684^2 + 1599^2 .

It is a cyclic number.

It is not a de Polignac number, because 61600657 - 2¹⁹ = 61076369 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61600457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30800328 + 30800329.

It is an arithmetic number, because the mean of its divisors is an integer number (30800329).

Almost surely, 2^61600657 is an apocalyptic number.

It is an amenable number.

61600657 is a deficient number, since it is larger than the sum of its proper divisors (1).

61600657 is an equidigital number, since it uses as much as digits as its factorization.

61600657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 61600657 is about 7848.6086028034. The cubic root of 61600657 is about 394.9375685125.

The spelling of 61600657 in words is "sixty-one million, six hundred thousand, six hundred fifty-seven".