64901903 has 8 divisors (see below), whose sum is σ = 74967120. Its totient is φ = 55530880.

The previous prime is 64901887. The next prime is 64901923. The reversal of 64901903 is 30910946.

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 64901903 - 2⁴ = 64901887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64901903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64901923) 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, 173348 + ... + 173721.

It is an arithmetic number, because the mean of its divisors is an integer number (9370890).

Almost surely, 2^64901903 is an apocalyptic number.

64901903 is a deficient number, since it is larger than the sum of its proper divisors (10065217).

64901903 is a wasteful number, since it uses less digits than its factorization.

64901903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347097.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 64901903 is about 8056.1717335221. The cubic root of 64901903 is about 401.8702067720.

The spelling of 64901903 in words is "sixty-four million, nine hundred one thousand, nine hundred three".