66676790 has 16 divisors (see below), whose sum is σ = 121538880. Its totient is φ = 26332800.

The previous prime is 66676787. The next prime is 66676807. The reversal of 66676790 is 9767666.

It is a congruent number.

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, 41411 + ... + 42990.

It is an arithmetic number, because the mean of its divisors is an integer number (7596180).

Almost surely, 2^66676790 is an apocalyptic number.

66676790 is a deficient number, since it is larger than the sum of its proper divisors (54862090).

66676790 is a wasteful number, since it uses less digits than its factorization.

66676790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84487.

The product of its (nonzero) digits is 571536, while the sum is 47.

The square root of 66676790 is about 8165.5857107742. The cubic root of 66676790 is about 405.5006560522.

The spelling of 66676790 in words is "sixty-six million, six hundred seventy-six thousand, seven hundred ninety".