3263666440 has 32 divisors (see below), whose sum is σ = 7357337280. Its totient is φ = 1302962112.

The previous prime is 3263666431. The next prime is 3263666449. The reversal of 3263666440 is 446663623.

It is an interprime number because it is at equal distance from previous prime (3263666431) and next prime (3263666449).

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 3263666393 and 3263666402.

It is not an unprimeable number, because it can be changed into a prime (3263666449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57084 + ... + 98923.

It is an arithmetic number, because the mean of its divisors is an integer number (229916790).

Almost surely, 2^3263666440 is an apocalyptic number.

It is an amenable number.

3263666440 is an abundant number, since it is smaller than the sum of its proper divisors (4093670840).

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

3263666440 is a wasteful number, since it uses less digits than its factorization.

3263666440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156541 (or 156537 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 40.

The square root of 3263666440 is about 57128.5081198520. The cubic root of 3263666440 is about 1483.3213755997.

The spelling of 3263666440 in words is "three billion, two hundred sixty-three million, six hundred sixty-six thousand, four hundred forty".