613971481 has 4 divisors (see below), whose sum is σ = 627034752. Its totient is φ = 600908212.

The previous prime is 613971469. The next prime is 613971497. The reversal of 613971481 is 184179316.

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 613971481 - 2⁷ = 613971353 is a prime.

It is a super-2 number, since 2×613971481² = 753921958962666722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613971401) 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 3 ways as a sum of consecutive naturals, for example, 6531565 + ... + 6531658.

It is an arithmetic number, because the mean of its divisors is an integer number (156758688).

Almost surely, 2^613971481 is an apocalyptic number.

It is an amenable number.

613971481 is a deficient number, since it is larger than the sum of its proper divisors (13063271).

613971481 is a wasteful number, since it uses less digits than its factorization.

613971481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13063270.

The product of its digits is 36288, while the sum is 40.

The square root of 613971481 is about 24778.4479134590. The cubic root of 613971481 is about 849.9291664157.

The spelling of 613971481 in words is "six hundred thirteen million, nine hundred seventy-one thousand, four hundred eighty-one".