264866620 has 48 divisors (see below), whose sum is σ = 592800768. Its totient is φ = 99176000.

The previous prime is 264866617. The next prime is 264866629. The reversal of 264866620 is 26668462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264866629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15495 + ... + 27745.

It is an arithmetic number, because the mean of its divisors is an integer number (12350016).

Almost surely, 2^264866620 is an apocalyptic number.

264866620 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 264866620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296400384).

264866620 is an abundant number, since it is smaller than the sum of its proper divisors (327934148).

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

264866620 is a wasteful number, since it uses less digits than its factorization.

264866620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12330 (or 12328 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 264866620 is about 16274.7233463429. The cubic root of 264866620 is about 642.2080471420.

The spelling of 264866620 in words is "two hundred sixty-four million, eight hundred sixty-six thousand, six hundred twenty".