664235045 has 8 divisors (see below), whose sum is σ = 798134040. Its totient is φ = 530686720.

The previous prime is 664235029. The next prime is 664235051. The reversal of 664235045 is 540532466.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 708964 + 663526081 = 842^2 + 25759^2 .

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

It is not a de Polignac number, because 664235045 - 2⁴ = 664235029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 664234996 and 664235014.

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, 83480 + ... + 91089.

It is an arithmetic number, because the mean of its divisors is an integer number (99766755).

Almost surely, 2^664235045 is an apocalyptic number.

It is an amenable number.

664235045 is a deficient number, since it is larger than the sum of its proper divisors (133898995).

664235045 is a wasteful number, since it uses less digits than its factorization.

664235045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175335.

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 664235045 is about 25772.7578074214. The cubic root of 664235045 is about 872.5170621973.

The spelling of 664235045 in words is "six hundred sixty-four million, two hundred thirty-five thousand, forty-five".