64673545 has 8 divisors (see below), whose sum is σ = 78701760. Its totient is φ = 51009840.

The previous prime is 64673537. The next prime is 64673561. The reversal of 64673545 is 54537646.

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

It is not a de Polignac number, because 64673545 - 2³ = 64673537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64673498 and 64673507.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90735 + ... + 91444.

It is an arithmetic number, because the mean of its divisors is an integer number (9837720).

Almost surely, 2^64673545 is an apocalyptic number.

It is an amenable number.

64673545 is a deficient number, since it is larger than the sum of its proper divisors (14028215).

64673545 is a wasteful number, since it uses less digits than its factorization.

64673545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182255.

The product of its digits is 302400, while the sum is 40.

The square root of 64673545 is about 8041.9863839726. The cubic root of 64673545 is about 401.3983247734.

The spelling of 64673545 in words is "sixty-four million, six hundred seventy-three thousand, five hundred forty-five".