66632546 has 8 divisors (see below), whose sum is σ = 103395420. Its totient is φ = 32167408.

The previous prime is 66632543. The next prime is 66632567. The reversal of 66632546 is 64523666.

It can be written as a sum of positive squares in 2 ways, for example, as 66601921 + 30625 = 8161^2 + 175^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66632543) 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, 574361 + ... + 574476.

Almost surely, 2^66632546 is an apocalyptic number.

66632546 is a deficient number, since it is larger than the sum of its proper divisors (36762874).

66632546 is a wasteful number, since it uses less digits than its factorization.

66632546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148868.

The product of its digits is 155520, while the sum is 38.

The square root of 66632546 is about 8162.8760862823. The cubic root of 66632546 is about 405.4109449709.

The spelling of 66632546 in words is "sixty-six million, six hundred thirty-two thousand, five hundred forty-six".