664154260 has 48 divisors (see below), whose sum is σ = 1738880640. Its totient is φ = 207008640.

The previous prime is 664154207. The next prime is 664154263. The reversal of 664154260 is 62451466.

It is a super-2 number, since 2×664154260² = 882201762152295200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664154263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214095 + ... + 217174.

It is an arithmetic number, because the mean of its divisors is an integer number (36226680).

Almost surely, 2^664154260 is an apocalyptic number.

It is an amenable number.

664154260 is an abundant number, since it is smaller than the sum of its proper divisors (1074726380).

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

664154260 is a wasteful number, since it uses less digits than its factorization.

664154260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431296 (or 431294 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 664154260 is about 25771.1905041269. The cubic root of 664154260 is about 872.4816886002.

The spelling of 664154260 in words is "six hundred sixty-four million, one hundred fifty-four thousand, two hundred sixty".