64253999 has 8 divisors (see below), whose sum is σ = 68571648. Its totient is φ = 59996160.

The previous prime is 64253989. The next prime is 64254007. The reversal of 64253999 is 99935246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64253999 - 2¹² = 64249903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64253909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12722 + ... + 17039.

It is an arithmetic number, because the mean of its divisors is an integer number (8571456).

Almost surely, 2^64253999 is an apocalyptic number.

64253999 is a deficient number, since it is larger than the sum of its proper divisors (4317649).

64253999 is a wasteful number, since it uses less digits than its factorization.

64253999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29905.

The product of its digits is 524880, while the sum is 47.

The square root of 64253999 is about 8015.8592178256. The cubic root of 64253999 is about 400.5284660849.

The spelling of 64253999 in words is "sixty-four million, two hundred fifty-three thousand, nine hundred ninety-nine".