64903845 has 16 divisors (see below), whose sum is σ = 104040000. Its totient is φ = 34550784.

The previous prime is 64903843. The next prime is 64903849. The reversal of 64903845 is 54830946.

It is not a de Polignac number, because 64903845 - 2¹ = 64903843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64903843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4906 + ... + 12404.

It is an arithmetic number, because the mean of its divisors is an integer number (6502500).

Almost surely, 2^64903845 is an apocalyptic number.

It is an amenable number.

64903845 is a deficient number, since it is larger than the sum of its proper divisors (39136155).

64903845 is a wasteful number, since it uses less digits than its factorization.

64903845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8084.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 64903845 is about 8056.2922613321. The cubic root of 64903845 is about 401.8742149964.

The spelling of 64903845 in words is "sixty-four million, nine hundred three thousand, eight hundred forty-five".