64669079 has 2 divisors, whose sum is σ = 64669080. Its totient is φ = 64669078.

The previous prime is 64669061. The next prime is 64669093. The reversal of 64669079 is 97096646.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64669079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64669049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32334539 + 32334540.

It is an arithmetic number, because the mean of its divisors is an integer number (32334540).

Almost surely, 2^64669079 is an apocalyptic number.

64669079 is a deficient number, since it is larger than the sum of its proper divisors (1).

64669079 is an equidigital number, since it uses as much as digits as its factorization.

64669079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 64669079 is about 8041.7087114618. The cubic root of 64669079 is about 401.3890851058.

The spelling of 64669079 in words is "sixty-four million, six hundred sixty-nine thousand, seventy-nine".