263320680 has 64 divisors (see below), whose sum is σ = 902816640. Its totient is φ = 60187392.

The previous prime is 263320663. The next prime is 263320699. The reversal of 263320680 is 86023362.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155899 + ... + 157578.

It is an arithmetic number, because the mean of its divisors is an integer number (14106510).

Almost surely, 2^263320680 is an apocalyptic number.

263320680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263320680 is an abundant number, since it is smaller than the sum of its proper divisors (639495960).

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

263320680 is a wasteful number, since it uses less digits than its factorization.

263320680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313498 (or 313494 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 263320680 is about 16227.1587161770. The cubic root of 263320680 is about 640.9561554346.

The spelling of 263320680 in words is "two hundred sixty-three million, three hundred twenty thousand, six hundred eighty".