64343677 has 2 divisors, whose sum is σ = 64343678. Its totient is φ = 64343676.

The previous prime is 64343647. The next prime is 64343687. The reversal of 64343677 is 77634346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49758916 + 14584761 = 7054^2 + 3819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64343677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64343647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32171838 + 32171839.

It is an arithmetic number, because the mean of its divisors is an integer number (32171839).

Almost surely, 2^64343677 is an apocalyptic number.

It is an amenable number.

64343677 is a deficient number, since it is larger than the sum of its proper divisors (1).

64343677 is an equidigital number, since it uses as much as digits as its factorization.

64343677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 40.

The square root of 64343677 is about 8021.4510532696. The cubic root of 64343677 is about 400.7147159422.

The spelling of 64343677 in words is "sixty-four million, three hundred forty-three thousand, six hundred seventy-seven".