66087404 has 24 divisors (see below), whose sum is σ = 120582000. Its totient is φ = 31653440.

The previous prime is 66087403. The next prime is 66087409. The reversal of 66087404 is 40478066.

It is not an unprimeable number, because it can be changed into a prime (66087403) 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, 13022 + ... + 17370.

It is an arithmetic number, because the mean of its divisors is an integer number (5024250).

Almost surely, 2^66087404 is an apocalyptic number.

It is an amenable number.

66087404 is a deficient number, since it is larger than the sum of its proper divisors (54494596).

66087404 is a wasteful number, since it uses less digits than its factorization.

66087404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513 (or 4511 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 66087404 is about 8129.4159691825. The cubic root of 66087404 is about 404.3023175843.

The spelling of 66087404 in words is "sixty-six million, eighty-seven thousand, four hundred four".