66614889 has 8 divisors (see below), whose sum is σ = 96894432. Its totient is φ = 40372640.

The previous prime is 66614881. The next prime is 66614897. The reversal of 66614889 is 98841666.

It is an interprime number because it is at equal distance from previous prime (66614881) and next prime (66614897).

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

It is not a de Polignac number, because 66614889 - 2³ = 66614881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66614881) 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, 1009284 + ... + 1009349.

It is an arithmetic number, because the mean of its divisors is an integer number (12111804).

Almost surely, 2^66614889 is an apocalyptic number.

It is an amenable number.

66614889 is a deficient number, since it is larger than the sum of its proper divisors (30279543).

66614889 is a wasteful number, since it uses less digits than its factorization.

66614889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018647.

The product of its digits is 497664, while the sum is 48.

The square root of 66614889 is about 8161.7944718058. The cubic root of 66614889 is about 405.3751317741.

The spelling of 66614889 in words is "sixty-six million, six hundred fourteen thousand, eight hundred eighty-nine".