66887074 has 4 divisors (see below), whose sum is σ = 100330614. Its totient is φ = 33443536.

The previous prime is 66887069. The next prime is 66887101. The reversal of 66887074 is 47078866.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54686025 + 12201049 = 7395^2 + 3493^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16721767 + ... + 16721770.

Almost surely, 2^66887074 is an apocalyptic number.

66887074 is a deficient number, since it is larger than the sum of its proper divisors (33443540).

66887074 is a wasteful number, since it uses less digits than its factorization.

66887074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33443539.

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 66887074 is about 8178.4518094808. The cubic root of 66887074 is about 405.9264954655.

The spelling of 66887074 in words is "sixty-six million, eight hundred eighty-seven thousand, seventy-four".