66476249 has 8 divisors (see below), whose sum is σ = 76023168. Its totient is φ = 56941920.

The previous prime is 66476243. The next prime is 66476287. The reversal of 66476249 is 94267466.

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

It is a de Polignac number, because none of the positive numbers 2^k-66476249 is a prime.

It is a super-2 number, since 2×66476249² = 8838183362220002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66476243) 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, 15764 + ... + 19530.

It is an arithmetic number, because the mean of its divisors is an integer number (9502896).

Almost surely, 2^66476249 is an apocalyptic number.

It is an amenable number.

66476249 is a deficient number, since it is larger than the sum of its proper divisors (9546919).

66476249 is a wasteful number, since it uses less digits than its factorization.

66476249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6295.

The product of its digits is 435456, while the sum is 44.

The square root of 66476249 is about 8153.2968178523. The cubic root of 66476249 is about 405.0937119933.

The spelling of 66476249 in words is "sixty-six million, four hundred seventy-six thousand, two hundred forty-nine".