64801519 has 2 divisors, whose sum is σ = 64801520. Its totient is φ = 64801518.

The previous prime is 64801493. The next prime is 64801531. The reversal of 64801519 is 91510846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64801519 - 2¹⁷ = 64670447 is a prime.

It is a super-2 number, since 2×64801519² = 8398473729414722, which contains 22 as substring.

It is equal to p_3829516 and since 64801519 and 3829516 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64801549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32400759 + 32400760.

It is an arithmetic number, because the mean of its divisors is an integer number (32400760).

Almost surely, 2^64801519 is an apocalyptic number.

64801519 is a deficient number, since it is larger than the sum of its proper divisors (1).

64801519 is an equidigital number, since it uses as much as digits as its factorization.

64801519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 64801519 is about 8049.9390680924. The cubic root of 64801519 is about 401.6629085083.

The spelling of 64801519 in words is "sixty-four million, eight hundred one thousand, five hundred nineteen".