664232046 has 16 divisors (see below), whose sum is σ = 1328884608. Its totient is φ = 221340600.

The previous prime is 664232027. The next prime is 664232047. The reversal of 664232046 is 640232466.

It is a super-2 number, since 2×664232046² = 882408421866692232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 664231998 and 664232016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664232047) 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, 5301 + ... + 36831.

It is an arithmetic number, because the mean of its divisors is an integer number (83055288).

Almost surely, 2^664232046 is an apocalyptic number.

664232046 is an abundant number, since it is smaller than the sum of its proper divisors (664652562).

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

664232046 is a wasteful number, since it uses less digits than its factorization.

664232046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35047.

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 664232046 is about 25772.6996257668. The cubic root of 664232046 is about 872.5157490664.

The spelling of 664232046 in words is "six hundred sixty-four million, two hundred thirty-two thousand, forty-six".