66704367 has 4 divisors (see below), whose sum is σ = 88939160. Its totient is φ = 44469576.

The previous prime is 66704359. The next prime is 66704371. The reversal of 66704367 is 76340766.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 66704367 - 2³ = 66704359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66704317) 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, 11117392 + ... + 11117397.

It is an arithmetic number, because the mean of its divisors is an integer number (22234790).

Almost surely, 2^66704367 is an apocalyptic number.

66704367 is a deficient number, since it is larger than the sum of its proper divisors (22234793).

66704367 is a wasteful number, since it uses less digits than its factorization.

66704367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22234792.

The product of its (nonzero) digits is 127008, while the sum is 39.

The square root of 66704367 is about 8167.2741474742. The cubic root of 66704367 is about 405.5565523158.

The spelling of 66704367 in words is "sixty-six million, seven hundred four thousand, three hundred sixty-seven".