664962048 has 110 divisors (see below), whose sum is σ = 1985954366. Its totient is φ = 221626368.

The previous prime is 664962043. The next prime is 664962091. The reversal of 664962048 is 840269466.

It can be written as a sum of positive squares in only one way, i.e., 585252864 + 79709184 = 24192^2 + 8928^2 .

It is a junction number, because it is equal to n+sod(n) for n = 664961994 and 664962012.

It is not an unprimeable number, because it can be changed into a prime (664962041) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 78936 + ... + 86952.

Almost surely, 2^664962048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664962048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (992977183).

664962048 is an abundant number, since it is smaller than the sum of its proper divisors (1320992318).

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

664962048 is an equidigital number, since it uses as much as digits as its factorization.

664962048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8049 (or 8022 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 664962048 is about 25786.8580482384. The cubic root of 664962048 is about 872.8352684537.

The spelling of 664962048 in words is "six hundred sixty-four million, nine hundred sixty-two thousand, forty-eight".