66293870 has 8 divisors (see below), whose sum is σ = 119328984. Its totient is φ = 26517544.

The previous prime is 66293867. The next prime is 66293933. The reversal of 66293870 is 7839266.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 3314684 + ... + 3314703.

It is an arithmetic number, because the mean of its divisors is an integer number (14916123).

Almost surely, 2^66293870 is an apocalyptic number.

66293870 is a deficient number, since it is larger than the sum of its proper divisors (53035114).

66293870 is a wasteful number, since it uses less digits than its factorization.

66293870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6629394.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 66293870 is about 8142.1047647399. The cubic root of 66293870 is about 404.7229116213.

The spelling of 66293870 in words is "sixty-six million, two hundred ninety-three thousand, eight hundred seventy".