264026660 has 96 divisors (see below), whose sum is σ = 645200640. Its totient is φ = 90021888.

The previous prime is 264026657. The next prime is 264026663. The reversal of 264026660 is 66620462.

It is an interprime number because it is at equal distance from previous prime (264026657) and next prime (264026663).

It is not an unprimeable number, because it can be changed into a prime (264026663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147692 + ... + 149468.

It is an arithmetic number, because the mean of its divisors is an integer number (6720840).

Almost surely, 2^264026660 is an apocalyptic number.

264026660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264026660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322600320).

264026660 is an abundant number, since it is smaller than the sum of its proper divisors (381173980).

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

264026660 is a wasteful number, since it uses less digits than its factorization.

264026660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845 (or 1843 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 264026660 is about 16248.8971933482. The cubic root of 264026660 is about 641.5284594302.

The spelling of 264026660 in words is "two hundred sixty-four million, twenty-six thousand, six hundred sixty".