664061262 has 16 divisors (see below), whose sum is σ = 1332452352. Its totient is φ = 220632120.

The previous prime is 664061249. The next prime is 664061269. The reversal of 664061262 is 262160466.

664061262 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664061269) 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, 178414 + ... + 182097.

It is an arithmetic number, because the mean of its divisors is an integer number (83278272).

Almost surely, 2^664061262 is an apocalyptic number.

664061262 is an abundant number, since it is smaller than the sum of its proper divisors (668391090).

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

664061262 is a wasteful number, since it uses less digits than its factorization.

664061262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360823.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 664061262 is about 25769.3861393709. The cubic root of 664061262 is about 872.4409637042.

The spelling of 664061262 in words is "six hundred sixty-four million, sixty-one thousand, two hundred sixty-two".