64407545 has 8 divisors (see below), whose sum is σ = 77398080. Its totient is φ = 51453360.

The previous prime is 64407517. The next prime is 64407547. The reversal of 64407545 is 54570446.

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

It is not a de Polignac number, because 64407545 - 2⁶ = 64407481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64407547) 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, 5021 + ... + 12410.

It is an arithmetic number, because the mean of its divisors is an integer number (9674760).

Almost surely, 2^64407545 is an apocalyptic number.

It is an amenable number.

64407545 is a deficient number, since it is larger than the sum of its proper divisors (12990535).

64407545 is a wasteful number, since it uses less digits than its factorization.

64407545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18175.

The product of its (nonzero) digits is 67200, while the sum is 35.

The square root of 64407545 is about 8025.4311410665. The cubic root of 64407545 is about 400.8472562085.

The spelling of 64407545 in words is "sixty-four million, four hundred seven thousand, five hundred forty-five".