613693 has 4 divisors (see below), whose sum is σ = 616000. Its totient is φ = 611388.

The previous prime is 613673. The next prime is 613699. The reversal of 613693 is 396316.

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 613693 - 2⁵ = 613661 is a prime.

It is a Duffinian number.

613693 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613699) 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, 693 + ... + 1306.

It is an arithmetic number, because the mean of its divisors is an integer number (154000).

2⁶¹³⁶⁹³ is an apocalyptic number.

It is an amenable number.

613693 is a deficient number, since it is larger than the sum of its proper divisors (2307).

613693 is a wasteful number, since it uses less digits than its factorization.

613693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306.

The product of its digits is 2916, while the sum is 28.

The square root of 613693 is about 783.3856010931. The cubic root of 613693 is about 84.9800645290.

The spelling of 613693 in words is "six hundred thirteen thousand, six hundred ninety-three".