66260408 has 16 divisors (see below), whose sum is σ = 124325280. Its totient is φ = 33107008.

The previous prime is 66260399. The next prime is 66260417. The reversal of 66260408 is 80406266.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66260399) and next prime (66260417).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18716 + ... + 21972.

It is an arithmetic number, because the mean of its divisors is an integer number (7770330).

Almost surely, 2^66260408 is an apocalyptic number.

It is an amenable number.

66260408 is a deficient number, since it is larger than the sum of its proper divisors (58064872).

66260408 is a wasteful number, since it uses less digits than its factorization.

66260408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5806 (or 5802 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 66260408 is about 8140.0496312983. The cubic root of 66260408 is about 404.6548051870.

The spelling of 66260408 in words is "sixty-six million, two hundred sixty thousand, four hundred eight".