64369999 has 2 divisors, whose sum is σ = 64370000. Its totient is φ = 64369998.

The previous prime is 64369979. The next prime is 64370017. The reversal of 64369999 is 99996346.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64369999 - 2¹³ = 64361807 is a prime.

It is a Chen prime.

64369999 is a modest number, since divided by 9999 gives 6436 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64369969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32184999 + 32185000.

It is an arithmetic number, because the mean of its divisors is an integer number (32185000).

Almost surely, 2^64369999 is an apocalyptic number.

64369999 is a deficient number, since it is larger than the sum of its proper divisors (1).

64369999 is an equidigital number, since it uses as much as digits as its factorization.

64369999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2834352, while the sum is 55.

The square root of 64369999 is about 8023.0916110936. The cubic root of 64369999 is about 400.7693505506.

The spelling of 64369999 in words is "sixty-four million, three hundred sixty-nine thousand, nine hundred ninety-nine".