614991 has 12 divisors (see below), whose sum is σ = 888648. Its totient is φ = 378144.

The previous prime is 614983. The next prime is 615019. The reversal of 614991 is 199416.

614991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 614991 - 2³ = 614983 is a prime.

It is a super-3 number, since 3×614991³ = 697794489223332813, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (614981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100 + ... + 1113.

It is an arithmetic number, because the mean of its divisors is an integer number (74054).

2⁶¹⁴⁹⁹¹ is an apocalyptic number.

614991 is a deficient number, since it is larger than the sum of its proper divisors (273657).

614991 is a wasteful number, since it uses less digits than its factorization.

614991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242 (or 1229 counting only the distinct ones).

The product of its digits is 1944, while the sum is 30.

The square root of 614991 is about 784.2136188565. The cubic root of 614991 is about 85.0399350985.

The spelling of 614991 in words is "six hundred fourteen thousand, nine hundred ninety-one".