66002440 has 32 divisors (see below), whose sum is σ = 169721280. Its totient is φ = 22629312.

The previous prime is 66002407. The next prime is 66002459. The reversal of 66002440 is 4420066.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117582 + ... + 118141.

It is an arithmetic number, because the mean of its divisors is an integer number (5303790).

Almost surely, 2^66002440 is an apocalyptic number.

It is an amenable number.

66002440 is an abundant number, since it is smaller than the sum of its proper divisors (103718840).

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

66002440 is a wasteful number, since it uses less digits than its factorization.

66002440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235741 (or 235737 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 66002440 is about 8124.1885748670. The cubic root of 66002440 is about 404.1289821148.

The spelling of 66002440 in words is "sixty-six million, two thousand, four hundred forty".