66736395 has 48 divisors (see below), whose sum is σ = 130572000. Its totient is φ = 31234560.

The previous prime is 66736393. The next prime is 66736469. The reversal of 66736395 is 59363766.

66736395 is a `hidden beast` number, since 6 + 6 + 7 + 3 + 639 + 5 = 666.

It is not a de Polignac number, because 66736395 - 2¹ = 66736393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 66736395.

It is not an unprimeable number, because it can be changed into a prime (66736393) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12031 + ... + 16679.

It is an arithmetic number, because the mean of its divisors is an integer number (2720250).

Almost surely, 2^66736395 is an apocalyptic number.

66736395 is a deficient number, since it is larger than the sum of its proper divisors (63835605).

66736395 is a wasteful number, since it uses less digits than its factorization.

66736395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4700 (or 4697 counting only the distinct ones).

The product of its digits is 612360, while the sum is 45.

The square root of 66736395 is about 8169.2346642755. The cubic root of 66736395 is about 405.6214510497.

The spelling of 66736395 in words is "sixty-six million, seven hundred thirty-six thousand, three hundred ninety-five".