66496897 has 8 divisors (see below), whose sum is σ = 67751936. Its totient is φ = 65249712.

The previous prime is 66496873. The next prime is 66496901. The reversal of 66496897 is 79869466.

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 66496897 - 2⁷ = 66496769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66496817) 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, 16768 + ... + 20350.

It is an arithmetic number, because the mean of its divisors is an integer number (8468992).

Almost surely, 2^66496897 is an apocalyptic number.

66496897 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

66496897 is a deficient number, since it is larger than the sum of its proper divisors (1255039).

66496897 is a wasteful number, since it uses less digits than its factorization.

66496897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927.

The product of its digits is 3919104, while the sum is 55.

The square root of 66496897 is about 8154.5629557935. The cubic root of 66496897 is about 405.1356493230.

The spelling of 66496897 in words is "sixty-six million, four hundred ninety-six thousand, eight hundred ninety-seven".