66862701 has 12 divisors (see below), whose sum is σ = 96664828. Its totient is φ = 44535744.

The previous prime is 66862699. The next prime is 66862703. The reversal of 66862701 is 10726866.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66862699) and next prime (66862703).

It can be written as a sum of positive squares in 2 ways, for example, as 31472100 + 35390601 = 5610^2 + 5949^2 .

It is not a de Polignac number, because 66862701 - 2¹ = 66862699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66862703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10521 + ... + 15633.

Almost surely, 2^66862701 is an apocalyptic number.

It is an amenable number.

66862701 is a deficient number, since it is larger than the sum of its proper divisors (29802127).

66862701 is a wasteful number, since it uses less digits than its factorization.

66862701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6572 (or 6569 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 66862701 is about 8176.9615995185. The cubic root of 66862701 is about 405.8771842516.

The spelling of 66862701 in words is "sixty-six million, eight hundred sixty-two thousand, seven hundred one".