617490149 has 4 divisors (see below), whose sum is σ = 625306560. Its totient is φ = 609673740.

The previous prime is 617490143. The next prime is 617490187. The reversal of 617490149 is 941094716.

617490149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 617490149 - 2⁸ = 617489893 is a prime.

It is a super-3 number, since 3×617490149³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617490143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3908087 + ... + 3908244.

It is an arithmetic number, because the mean of its divisors is an integer number (156326640).

Almost surely, 2^617490149 is an apocalyptic number.

It is an amenable number.

617490149 is a deficient number, since it is larger than the sum of its proper divisors (7816411).

617490149 is an equidigital number, since it uses as much as digits as its factorization.

617490149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7816410.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 617490149 is about 24849.3490659212. The cubic root of 617490149 is about 851.5497213866.

The spelling of 617490149 in words is "six hundred seventeen million, four hundred ninety thousand, one hundred forty-nine".