64663334 has 16 divisors (see below), whose sum is σ = 100801536. Its totient is φ = 31077000.

The previous prime is 64663279. The next prime is 64663337. The reversal of 64663334 is 43336646.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 64663294 and 64663303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64663337) 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, 5909 + ... + 12815.

It is an arithmetic number, because the mean of its divisors is an integer number (6300096).

Almost surely, 2^64663334 is an apocalyptic number.

64663334 is a deficient number, since it is larger than the sum of its proper divisors (36138202).

64663334 is a wasteful number, since it uses less digits than its factorization.

64663334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091.

The product of its digits is 93312, while the sum is 35.

The square root of 64663334 is about 8041.3515033233. The cubic root of 64663334 is about 401.3771987008.

The spelling of 64663334 in words is "sixty-four million, six hundred sixty-three thousand, three hundred thirty-four".