64144895 has 16 divisors (see below), whose sum is σ = 79377408. Its totient is φ = 49735200.

The previous prime is 64144889. The next prime is 64144909. The reversal of 64144895 is 59844146.

It is not a de Polignac number, because 64144895 - 2⁶ = 64144831 is a prime.

It is a super-2 number, since 2×64144895² = 8229135109122050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23870 + ... + 26420.

It is an arithmetic number, because the mean of its divisors is an integer number (4961088).

Almost surely, 2^64144895 is an apocalyptic number.

64144895 is a deficient number, since it is larger than the sum of its proper divisors (15232513).

64144895 is a wasteful number, since it uses less digits than its factorization.

64144895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710.

The product of its digits is 138240, while the sum is 41.

The square root of 64144895 is about 8009.0508176687. The cubic root of 64144895 is about 400.3016370639.

The spelling of 64144895 in words is "sixty-four million, one hundred forty-four thousand, eight hundred ninety-five".