66087416 has 16 divisors (see below), whose sum is σ = 124243200. Its totient is φ = 32955904.

The previous prime is 66087409. The next prime is 66087419. The reversal of 66087416 is 61478066.

It is a self number, because there is not a number n which added to its sum of digits gives 66087416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66087419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7721 + ... + 13848.

It is an arithmetic number, because the mean of its divisors is an integer number (7765200).

Almost surely, 2^66087416 is an apocalyptic number.

It is an amenable number.

66087416 is a deficient number, since it is larger than the sum of its proper divisors (58155784).

66087416 is a wasteful number, since it uses less digits than its factorization.

66087416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21958 (or 21954 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 66087416 is about 8129.4167072429. The cubic root of 66087416 is about 404.3023420551.

The spelling of 66087416 in words is "sixty-six million, eighty-seven thousand, four hundred sixteen".