66836413 has 8 divisors (see below), whose sum is σ = 79705728. Its totient is φ = 54797424.

The previous prime is 66836411. The next prime is 66836443. The reversal of 66836413 is 31463866.

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

It is a cyclic number.

It is not a de Polignac number, because 66836413 - 2¹ = 66836411 is a prime.

It is a super-2 number, since 2×66836413² = 8934212205413138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66836411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207406 + ... + 207727.

It is an arithmetic number, because the mean of its divisors is an integer number (9963216).

Almost surely, 2^66836413 is an apocalyptic number.

It is an amenable number.

66836413 is a deficient number, since it is larger than the sum of its proper divisors (12869315).

66836413 is a wasteful number, since it uses less digits than its factorization.

66836413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415163.

The product of its digits is 62208, while the sum is 37.

The square root of 66836413 is about 8175.3539984517. The cubic root of 66836413 is about 405.8239851940.

The spelling of 66836413 in words is "sixty-six million, eight hundred thirty-six thousand, four hundred thirteen".