664022050 has 12 divisors (see below), whose sum is σ = 1235081106. Its totient is φ = 265608800.

The previous prime is 664022041. The next prime is 664022053. The reversal of 664022050 is 50220466.

It can be written as a sum of positive squares in 3 ways, for example, as 582787881 + 81234169 = 24141^2 + 9013^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (664022053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6640171 + ... + 6640270.

Almost surely, 2^664022050 is an apocalyptic number.

664022050 is a deficient number, since it is larger than the sum of its proper divisors (571059056).

664022050 is a wasteful number, since it uses less digits than its factorization.

664022050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13280453 (or 13280448 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 664022050 is about 25768.6253028756. The cubic root of 664022050 is about 872.4237911779.

The spelling of 664022050 in words is "six hundred sixty-four million, twenty-two thousand, fifty".