616749 has 16 divisors (see below), whose sum is σ = 963072. Its totient is φ = 343728.

The previous prime is 616741. The next prime is 616757. The reversal of 616749 is 947616.

It is a happy number.

616749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (616741) and next prime (616757).

It is not a de Polignac number, because 616749 - 2³ = 616741 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616741) 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, 562 + ... + 1244.

It is an arithmetic number, because the mean of its divisors is an integer number (60192).

2⁶¹⁶⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

616749 is a deficient number, since it is larger than the sum of its proper divisors (346323).

616749 is a wasteful number, since it uses less digits than its factorization.

616749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736.

The product of its digits is 9072, while the sum is 33.

The square root of 616749 is about 785.3336870401. Note that the first 3 decimals coincide. The cubic root of 616749 is about 85.1208891173.

It can be divided in two parts, 6167 and 49, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 616749 in words is "six hundred sixteen thousand, seven hundred forty-nine".