66680962 has 4 divisors (see below), whose sum is σ = 100021446. Its totient is φ = 33340480.

The previous prime is 66680959. The next prime is 66680981. The reversal of 66680962 is 26908666.

It is a happy number.

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., 54922921 + 11758041 = 7411^2 + 3429^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16670239 + ... + 16670242.

Almost surely, 2^66680962 is an apocalyptic number.

66680962 is a deficient number, since it is larger than the sum of its proper divisors (33340484).

66680962 is a wasteful number, since it uses less digits than its factorization.

66680962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33340483.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 66680962 is about 8165.8411691632. The cubic root of 66680962 is about 405.5091133352.

The spelling of 66680962 in words is "sixty-six million, six hundred eighty thousand, nine hundred sixty-two".