42647677 has 2 divisors, whose sum is σ = 42647678. Its totient is φ = 42647676.

The previous prime is 42647639. The next prime is 42647707. The reversal of 42647677 is 77674624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33339076 + 9308601 = 5774^2 + 3051^2 .

It is a cyclic number.

It is not a de Polignac number, because 42647677 - 2¹⁵ = 42614909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42647617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21323838 + 21323839.

It is an arithmetic number, because the mean of its divisors is an integer number (21323839).

Almost surely, 2^42647677 is an apocalyptic number.

It is an amenable number.

42647677 is a deficient number, since it is larger than the sum of its proper divisors (1).

42647677 is an equidigital number, since it uses as much as digits as its factorization.

42647677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 395136, while the sum is 43.

The square root of 42647677 is about 6530.5188920943. The cubic root of 42647677 is about 349.3803375710.

The spelling of 42647677 in words is "forty-two million, six hundred forty-seven thousand, six hundred seventy-seven".