3263696640 has 216 divisors, whose sum is σ = 11334658608. Its totient is φ = 867041280.

The previous prime is 3263696617. The next prime is 3263696693. The reversal of 3263696640 is 466963623.

It is a happy number.

3263696640 is a `hidden beast` number, since 3 + 2 + 636 + 9 + 6 + 6 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5656032 + ... + 5656608.

Almost surely, 2^3263696640 is an apocalyptic number.

3263696640 is a gapful number since it is divisible by the number (30) 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 3263696640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5667329304).

3263696640 is an abundant number, since it is smaller than the sum of its proper divisors (8070961968).

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

3263696640 is a wasteful number, since it uses less digits than its factorization.

3263696640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 45.

The square root of 3263696640 is about 57128.7724356125. The cubic root of 3263696640 is about 1483.3259508393.

The spelling of 3263696640 in words is "three billion, two hundred sixty-three million, six hundred ninety-six thousand, six hundred forty".