66898495 has 8 divisors (see below), whose sum is σ = 81476784. Its totient is φ = 52719744.

The previous prime is 66898493. The next prime is 66898537. The reversal of 66898495 is 59489866.

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 66898495 - 2¹ = 66898493 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 (66898493) 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, 99514 + ... + 100183.

It is an arithmetic number, because the mean of its divisors is an integer number (10184598).

Almost surely, 2^66898495 is an apocalyptic number.

66898495 is a deficient number, since it is larger than the sum of its proper divisors (14578289).

66898495 is a wasteful number, since it uses less digits than its factorization.

66898495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199769.

The product of its digits is 3732480, while the sum is 55.

The square root of 66898495 is about 8179.1500169639. The cubic root of 66898495 is about 405.9495981986.

The spelling of 66898495 in words is "sixty-six million, eight hundred ninety-eight thousand, four hundred ninety-five".