64671801 has 16 divisors (see below), whose sum is σ = 92984640. Its totient is φ = 39847680.

The previous prime is 64671793. The next prime is 64671823. The reversal of 64671801 is 10817646.

It is a happy number.

It is not a de Polignac number, because 64671801 - 2³ = 64671793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64671851) 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, 11500 + ... + 16173.

It is an arithmetic number, because the mean of its divisors is an integer number (5811540).

Almost surely, 2^64671801 is an apocalyptic number.

It is an amenable number.

64671801 is a deficient number, since it is larger than the sum of its proper divisors (28312839).

64671801 is a wasteful number, since it uses less digits than its factorization.

64671801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27736.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 64671801 is about 8041.8779523193. The cubic root of 64671801 is about 401.3947166779.

The spelling of 64671801 in words is "sixty-four million, six hundred seventy-one thousand, eight hundred one".