263680794 has 96 divisors (see below), whose sum is σ = 636854400. Its totient is φ = 78341760.

The previous prime is 263680733. The next prime is 263680817. The reversal of 263680794 is 497086362.

263680794 is a `hidden beast` number, since 2 + 636 + 8 + 0 + 7 + 9 + 4 = 666.

It is a super-2 number, since 2×263680794² = 139055122248940872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 980092 + ... + 980360.

It is an arithmetic number, because the mean of its divisors is an integer number (6633900).

Almost surely, 2^263680794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263680794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318427200).

263680794 is an abundant number, since it is smaller than the sum of its proper divisors (373173606).

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

263680794 is a wasteful number, since it uses less digits than its factorization.

263680794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 263680794 is about 16238.2509526119. The cubic root of 263680794 is about 641.2482101565.

The spelling of 263680794 in words is "two hundred sixty-three million, six hundred eighty thousand, seven hundred ninety-four".