66052949 has 4 divisors (see below), whose sum is σ = 69529440. Its totient is φ = 62576460.

The previous prime is 66052913. The next prime is 66052963. The reversal of 66052949 is 94925066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66052949 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 (66051949) 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, 1738217 + ... + 1738254.

It is an arithmetic number, because the mean of its divisors is an integer number (17382360).

Almost surely, 2^66052949 is an apocalyptic number.

It is an amenable number.

66052949 is a deficient number, since it is larger than the sum of its proper divisors (3476491).

66052949 is a wasteful number, since it uses less digits than its factorization.

66052949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3476490.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 66052949 is about 8127.2965369796. The cubic root of 66052949 is about 404.2320436890.

The spelling of 66052949 in words is "sixty-six million, fifty-two thousand, nine hundred forty-nine".