61577671 has 2 divisors, whose sum is σ = 61577672. Its totient is φ = 61577670.

The previous prime is 61577653. The next prime is 61577699. The reversal of 61577671 is 17677516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61577671 - 2⁷ = 61577543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61577071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30788835 + 30788836.

It is an arithmetic number, because the mean of its divisors is an integer number (30788836).

Almost surely, 2^61577671 is an apocalyptic number.

61577671 is a deficient number, since it is larger than the sum of its proper divisors (1).

61577671 is an equidigital number, since it uses as much as digits as its factorization.

61577671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61740, while the sum is 40.

The square root of 61577671 is about 7847.1441301916. The cubic root of 61577671 is about 394.8884393594. Note that the first 3 decimals are identical.

The spelling of 61577671 in words is "sixty-one million, five hundred seventy-seven thousand, six hundred seventy-one".