614691668 has 12 divisors (see below), whose sum is σ = 1096007220. Its totient is φ = 301546752.

The previous prime is 614691641. The next prime is 614691673. The reversal of 614691668 is 866196416.

It can be written as a sum of positive squares in 2 ways, for example, as 161086864 + 453604804 = 12692^2 + 21298^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1449533 + ... + 1449956.

It is an arithmetic number, because the mean of its divisors is an integer number (91333935).

Almost surely, 2^614691668 is an apocalyptic number.

It is an amenable number.

614691668 is a deficient number, since it is larger than the sum of its proper divisors (481315552).

614691668 is a wasteful number, since it uses less digits than its factorization.

614691668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899546 (or 2899544 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 614691668 is about 24792.9761827821. The cubic root of 614691668 is about 850.2613581530.

The spelling of 614691668 in words is "six hundred fourteen million, six hundred ninety-one thousand, six hundred sixty-eight".