64674349 has 2 divisors, whose sum is σ = 64674350. Its totient is φ = 64674348.

The previous prime is 64674317. The next prime is 64674353. The reversal of 64674349 is 94347646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61121124 + 3553225 = 7818^2 + 1885^2 .

It is a cyclic number.

It is not a de Polignac number, because 64674349 - 2⁵ = 64674317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64674149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32337174 + 32337175.

It is an arithmetic number, because the mean of its divisors is an integer number (32337175).

Almost surely, 2^64674349 is an apocalyptic number.

It is an amenable number.

64674349 is a deficient number, since it is larger than the sum of its proper divisors (1).

64674349 is an equidigital number, since it uses as much as digits as its factorization.

64674349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 43.

The square root of 64674349 is about 8042.0363714671. The cubic root of 64674349 is about 401.3999881167.

It can be divided in two parts, 6467 and 4349, that added together give a square (10816 = 104²).

The spelling of 64674349 in words is "sixty-four million, six hundred seventy-four thousand, three hundred forty-nine".