613629 has 8 divisors (see below), whose sum is σ = 909120. Its totient is φ = 409068.

The previous prime is 613609. The next prime is 613633. The reversal of 613629 is 926316.

It is a happy number.

It is not a de Polignac number, because 613629 - 2⁵ = 613597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 22727 = 613629 / (6 + 1 + 3 + 6 + 2 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11337 + ... + 11390.

It is an arithmetic number, because the mean of its divisors is an integer number (113640).

2⁶¹³⁶²⁹ is an apocalyptic number.

It is an amenable number.

613629 is a deficient number, since it is larger than the sum of its proper divisors (295491).

613629 is a wasteful number, since it uses less digits than its factorization.

613629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22736 (or 22730 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 613629 is about 783.3447516898. The cubic root of 613629 is about 84.9771103302.

The spelling of 613629 in words is "six hundred thirteen thousand, six hundred twenty-nine".