61356677 has 2 divisors, whose sum is σ = 61356678. Its totient is φ = 61356676.

The previous prime is 61356661. The next prime is 61356679. The reversal of 61356677 is 77665316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53963716 + 7392961 = 7346^2 + 2719^2 .

It is a cyclic number.

It is not a de Polignac number, because 61356677 - 2⁴ = 61356661 is a prime.

Together with 61356679, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_3637769 and since 61356677 and 3637769 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61356679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30678338 + 30678339.

It is an arithmetic number, because the mean of its divisors is an integer number (30678339).

Almost surely, 2^61356677 is an apocalyptic number.

It is an amenable number.

61356677 is a deficient number, since it is larger than the sum of its proper divisors (1).

61356677 is an equidigital number, since it uses as much as digits as its factorization.

61356677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 41.

The square root of 61356677 is about 7833.0502998513. The cubic root of 61356677 is about 394.4154725589.

The spelling of 61356677 in words is "sixty-one million, three hundred fifty-six thousand, six hundred seventy-seven".