66736698 has 32 divisors (see below), whose sum is σ = 153350016. Its totient is φ = 18966528.

The previous prime is 66736693. The next prime is 66736717. The reversal of 66736698 is 89663766.

It is a self number, because there is not a number n which added to its sum of digits gives 66736698.

It is not an unprimeable number, because it can be changed into a prime (66736693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3990 + ... + 12222.

It is an arithmetic number, because the mean of its divisors is an integer number (4792188).

Almost surely, 2^66736698 is an apocalyptic number.

66736698 is an abundant number, since it is smaller than the sum of its proper divisors (86613318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66736698 is a wasteful number, since it uses less digits than its factorization.

66736698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8438.

The product of its digits is 1959552, while the sum is 51.

The square root of 66736698 is about 8169.2532094433. The cubic root of 66736698 is about 405.6220649232.

The spelling of 66736698 in words is "sixty-six million, seven hundred thirty-six thousand, six hundred ninety-eight".