664030090 has 8 divisors (see below), whose sum is σ = 1195254180. Its totient is φ = 265612032.

The previous prime is 664030051. The next prime is 664030091. The reversal of 664030090 is 90030466.

It can be written as a sum of positive squares in 2 ways, for example, as 573075721 + 90954369 = 23939^2 + 9537^2 .

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 (664030091) 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, 33201495 + ... + 33201514.

Almost surely, 2^664030090 is an apocalyptic number.

664030090 is a deficient number, since it is larger than the sum of its proper divisors (531224090).

664030090 is a wasteful number, since it uses less digits than its factorization.

664030090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66403016.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 664030090 is about 25768.7813060688. The cubic root of 664030090 is about 872.4273122753.

The spelling of 664030090 in words is "six hundred sixty-four million, thirty thousand, ninety".