66031354 has 4 divisors (see below), whose sum is σ = 99047034. Its totient is φ = 33015676.

The previous prime is 66031351. The next prime is 66031369. The reversal of 66031354 is 45313066.

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., 64400625 + 1630729 = 8025^2 + 1277^2 .

It is a super-2 number, since 2×66031354² = 8720279422146632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66031351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16507837 + ... + 16507840.

Almost surely, 2^66031354 is an apocalyptic number.

66031354 is a deficient number, since it is larger than the sum of its proper divisors (33015680).

66031354 is a wasteful number, since it uses less digits than its factorization.

66031354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33015679.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 66031354 is about 8125.9678808127. The cubic root of 66031354 is about 404.1879863956.

The spelling of 66031354 in words is "sixty-six million, thirty-one thousand, three hundred fifty-four".