64115879 has 2 divisors, whose sum is σ = 64115880. Its totient is φ = 64115878.

The previous prime is 64115803. The next prime is 64115893. The reversal of 64115879 is 97851146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64115879 - 2¹² = 64111783 is a prime.

It is a super-2 number, since 2×64115879² = 8221691879885282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64114879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32057939 + 32057940.

It is an arithmetic number, because the mean of its divisors is an integer number (32057940).

Almost surely, 2^64115879 is an apocalyptic number.

64115879 is a deficient number, since it is larger than the sum of its proper divisors (1).

64115879 is an equidigital number, since it uses as much as digits as its factorization.

64115879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 41.

The square root of 64115879 is about 8007.2391621582. The cubic root of 64115879 is about 400.2412690272.

The spelling of 64115879 in words is "sixty-four million, one hundred fifteen thousand, eight hundred seventy-nine".