64071885 has 32 divisors (see below), whose sum is σ = 106463232. Its totient is φ = 32869440.

The previous prime is 64071883. The next prime is 64071893. The reversal of 64071885 is 58817046.

It is not a de Polignac number, because 64071885 - 2¹ = 64071883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64071883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105252 + ... + 105858.

It is an arithmetic number, because the mean of its divisors is an integer number (3326976).

Almost surely, 2^64071885 is an apocalyptic number.

It is an amenable number.

64071885 is a deficient number, since it is larger than the sum of its proper divisors (42391347).

64071885 is a wasteful number, since it uses less digits than its factorization.

64071885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 64071885 is about 8004.4915516228. The cubic root of 64071885 is about 400.1497043812.

The spelling of 64071885 in words is "sixty-four million, seventy-one thousand, eight hundred eighty-five".