64401079 has 2 divisors, whose sum is σ = 64401080. Its totient is φ = 64401078.

The previous prime is 64401031. The next prime is 64401091. The reversal of 64401079 is 97010446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64401079 - 2¹⁷ = 64270007 is a prime.

It is equal to p_3807409 and since 64401079 and 3807409 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64401079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64401479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32200539 + 32200540.

It is an arithmetic number, because the mean of its divisors is an integer number (32200540).

Almost surely, 2^64401079 is an apocalyptic number.

64401079 is a deficient number, since it is larger than the sum of its proper divisors (1).

64401079 is an equidigital number, since it uses as much as digits as its factorization.

64401079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 64401079 is about 8025.0282865545. The cubic root of 64401079 is about 400.8338418117.

The spelling of 64401079 in words is "sixty-four million, four hundred one thousand, seventy-nine".