64674667 has 2 divisors, whose sum is σ = 64674668. Its totient is φ = 64674666.

The previous prime is 64674637. The next prime is 64674691. The reversal of 64674667 is 76647646.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64674667 is a prime.

It is not a weakly prime, because it can be changed into another prime (64674637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32337333 + 32337334.

It is an arithmetic number, because the mean of its divisors is an integer number (32337334).

Almost surely, 2^64674667 is an apocalyptic number.

64674667 is a deficient number, since it is larger than the sum of its proper divisors (1).

64674667 is an equidigital number, since it uses as much as digits as its factorization.

64674667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 46.

The square root of 64674667 is about 8042.0561425546. The cubic root of 64674667 is about 401.4006460024.

It can be divided in two parts, 64674 and 667, that added together give a triangular number (65341 = T₃₆₁).

The spelling of 64674667 in words is "sixty-four million, six hundred seventy-four thousand, six hundred sixty-seven".