66062149 has 4 divisors (see below), whose sum is σ = 66350860. Its totient is φ = 65773440.

The previous prime is 66062137. The next prime is 66062159. The reversal of 66062149 is 94126066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94126066 = 2 ⋅47063033.

It can be written as a sum of positive squares in 2 ways, for example, as 45131524 + 20930625 = 6718^2 + 4575^2 .

It is a cyclic number.

It is not a de Polignac number, because 66062149 - 2⁹ = 66061637 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 (66062159) 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, 144012 + ... + 144469.

It is an arithmetic number, because the mean of its divisors is an integer number (16587715).

Almost surely, 2^66062149 is an apocalyptic number.

It is an amenable number.

66062149 is a deficient number, since it is larger than the sum of its proper divisors (288711).

66062149 is a wasteful number, since it uses less digits than its factorization.

66062149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288710.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 66062149 is about 8127.8625111403. The cubic root of 66062149 is about 404.2508102605.

The spelling of 66062149 in words is "sixty-six million, sixty-two thousand, one hundred forty-nine".