64144045 has 32 divisors (see below), whose sum is σ = 90616320. Its totient is φ = 42681600.

The previous prime is 64144037. The next prime is 64144099. The reversal of 64144045 is 54044146.

It is not a de Polignac number, because 64144045 - 2³ = 64144037 is a prime.

It is a super-2 number, since 2×64144045² = 8228917017924050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279991 + ... + 280219.

It is an arithmetic number, because the mean of its divisors is an integer number (2831760).

Almost surely, 2^64144045 is an apocalyptic number.

It is an amenable number.

64144045 is a deficient number, since it is larger than the sum of its proper divisors (26472275).

64144045 is a wasteful number, since it uses less digits than its factorization.

64144045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 64144045 is about 8008.9977525281. The cubic root of 64144045 is about 400.2998688904.

The spelling of 64144045 in words is "sixty-four million, one hundred forty-four thousand, forty-five".