613381487 has 4 divisors (see below), whose sum is σ = 615714000. Its totient is φ = 611048976.

The previous prime is 613381441. The next prime is 613381499. The reversal of 613381487 is 784183316.

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 613381487 - 2¹⁰ = 613380463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613387487) 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, 1165862 + ... + 1166387.

It is an arithmetic number, because the mean of its divisors is an integer number (153928500).

Almost surely, 2^613381487 is an apocalyptic number.

613381487 is a deficient number, since it is larger than the sum of its proper divisors (2332513).

613381487 is a wasteful number, since it uses less digits than its factorization.

613381487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332512.

The product of its digits is 96768, while the sum is 41.

The square root of 613381487 is about 24766.5396654438. The cubic root of 613381487 is about 849.6568335614.

The spelling of 613381487 in words is "six hundred thirteen million, three hundred eighty-one thousand, four hundred eighty-seven".