64145073 has 8 divisors (see below), whose sum is σ = 85655808. Its totient is φ = 42698864.

The previous prime is 64145057. The next prime is 64145089. The reversal of 64145073 is 37054146.

It is an interprime number because it is at equal distance from previous prime (64145057) and next prime (64145089).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64145073 - 2⁴ = 64145057 is a prime.

It is a super-2 number, since 2×64145073² = 8229180780350658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64145073.

It is not an unprimeable number, because it can be changed into a prime (64145023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13761 + ... + 17822.

It is an arithmetic number, because the mean of its divisors is an integer number (10706976).

Almost surely, 2^64145073 is an apocalyptic number.

It is an amenable number.

64145073 is a deficient number, since it is larger than the sum of its proper divisors (21510735).

64145073 is a wasteful number, since it uses less digits than its factorization.

64145073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32263.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 64145073 is about 8009.0619300889. The cubic root of 64145073 is about 400.3020073382.

The spelling of 64145073 in words is "sixty-four million, one hundred forty-five thousand, seventy-three".