64756473 has 8 divisors (see below), whose sum is σ = 87558336. Its totient is φ = 42562800.

The previous prime is 64756469. The next prime is 64756481. The reversal of 64756473 is 37465746.

It is a happy number.

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

It is not a de Polignac number, because 64756473 - 2² = 64756469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64756403) 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, 151798 + ... + 152223.

It is an arithmetic number, because the mean of its divisors is an integer number (10944792).

Almost surely, 2^64756473 is an apocalyptic number.

It is an amenable number.

64756473 is a deficient number, since it is larger than the sum of its proper divisors (22801863).

64756473 is a wasteful number, since it uses less digits than its factorization.

64756473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304095.

The product of its digits is 423360, while the sum is 42.

The square root of 64756473 is about 8047.1406723134. The cubic root of 64756473 is about 401.5698165472.

The spelling of 64756473 in words is "sixty-four million, seven hundred fifty-six thousand, four hundred seventy-three".