64500747 has 8 divisors (see below), whose sum is σ = 87458880. Its totient is φ = 42271560.

The previous prime is 64500713. The next prime is 64500757. The reversal of 64500747 is 74700546.

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

It is not a de Polignac number, because 64500747 - 2⁷ = 64500619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64500757) 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, 182029 + ... + 182382.

It is an arithmetic number, because the mean of its divisors is an integer number (10932360).

Almost surely, 2^64500747 is an apocalyptic number.

64500747 is a deficient number, since it is larger than the sum of its proper divisors (22958133).

64500747 is a wasteful number, since it uses less digits than its factorization.

64500747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364473.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 64500747 is about 8031.2357081585. The cubic root of 64500747 is about 401.0405138968.

The spelling of 64500747 in words is "sixty-four million, five hundred thousand, seven hundred forty-seven".