64723066 has 8 divisors (see below), whose sum is σ = 97621524. Its totient is φ = 32182560.

The previous prime is 64723031. The next prime is 64723069. The reversal of 64723066 is 66032746.

It can be written as a sum of positive squares in 2 ways, for example, as 60606225 + 4116841 = 7785^2 + 2029^2 .

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

It is not an unprimeable number, because it can be changed into a prime (64723069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89035 + ... + 89758.

Almost surely, 2^64723066 is an apocalyptic number.

64723066 is a deficient number, since it is larger than the sum of its proper divisors (32898458).

64723066 is a wasteful number, since it uses less digits than its factorization.

64723066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178976.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 64723066 is about 8045.0646983104. The cubic root of 64723066 is about 401.5007498330.

The spelling of 64723066 in words is "sixty-four million, seven hundred twenty-three thousand, sixty-six".