64987079 has 2 divisors, whose sum is σ = 64987080. Its totient is φ = 64987078.

The previous prime is 64987051. The next prime is 64987099. The reversal of 64987079 is 97078946.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64987079 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64987019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32493539 + 32493540.

It is an arithmetic number, because the mean of its divisors is an integer number (32493540).

Almost surely, 2^64987079 is an apocalyptic number.

64987079 is a deficient number, since it is larger than the sum of its proper divisors (1).

64987079 is an equidigital number, since it uses as much as digits as its factorization.

64987079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 64987079 is about 8061.4563820689. The cubic root of 64987079 is about 402.0459321459.

The spelling of 64987079 in words is "sixty-four million, nine hundred eighty-seven thousand, seventy-nine".