140066897 has 16 divisors (see below), whose sum is σ = 150336000. Its totient is φ = 130206720.

The previous prime is 140066891. The next prime is 140066911. The reversal of 140066897 is 798660041.

It is a cyclic number.

It is not a de Polignac number, because 140066897 - 2⁴ = 140066881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140066891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311729 + ... + 312177.

It is an arithmetic number, because the mean of its divisors is an integer number (9396000).

Almost surely, 2^140066897 is an apocalyptic number.

It is an amenable number.

140066897 is a deficient number, since it is larger than the sum of its proper divisors (10269103).

140066897 is a wasteful number, since it uses less digits than its factorization.

140066897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 140066897 is about 11834.9861427887. The cubic root of 140066897 is about 519.3321023197.

The spelling of 140066897 in words is "one hundred forty million, sixty-six thousand, eight hundred ninety-seven".