613748903 has 4 divisors (see below), whose sum is σ = 618228960. Its totient is φ = 609268848.

The previous prime is 613748879. The next prime is 613748923. The reversal of 613748903 is 309847316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 613748903 - 2¹⁸ = 613486759 is a prime.

It is a super-3 number, since 3×613748903³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613748923) 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, 2239823 + ... + 2240096.

It is an arithmetic number, because the mean of its divisors is an integer number (154557240).

Almost surely, 2^613748903 is an apocalyptic number.

613748903 is a deficient number, since it is larger than the sum of its proper divisors (4480057).

613748903 is a wasteful number, since it uses less digits than its factorization.

613748903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4480056.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 613748903 is about 24773.9561434988. The cubic root of 613748903 is about 849.8264480731.

The spelling of 613748903 in words is "six hundred thirteen million, seven hundred forty-eight thousand, nine hundred three".