664829430 has 16 divisors (see below), whose sum is σ = 1595590704. Its totient is φ = 177287840.

The previous prime is 664829411. The next prime is 664829447. The reversal of 664829430 is 34928466.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11080461 + ... + 11080520.

It is an arithmetic number, because the mean of its divisors is an integer number (99724419).

Almost surely, 2^664829430 is an apocalyptic number.

664829430 is an abundant number, since it is smaller than the sum of its proper divisors (930761274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664829430 is a wasteful number, since it uses less digits than its factorization.

664829430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22160991.

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 664829430 is about 25784.2864939094. The cubic root of 664829430 is about 872.7772393957. Note that the first 3 decimals are identical.

The spelling of 664829430 in words is "six hundred sixty-four million, eight hundred twenty-nine thousand, four hundred thirty".