613991627 has 4 divisors (see below), whose sum is σ = 614268336. Its totient is φ = 613714920.

The previous prime is 613991621. The next prime is 613991633. The reversal of 613991627 is 726199316.

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

It is an interprime number because it is at equal distance from previous prime (613991621) and next prime (613991633).

It is a cyclic number.

It is not a de Polignac number, because 613991627 - 2⁶ = 613991563 is a prime.

It is a super-2 number, since 2×613991627² = 753971436052214258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613991621) 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, 134999 + ... + 139472.

It is an arithmetic number, because the mean of its divisors is an integer number (153567084).

Almost surely, 2^613991627 is an apocalyptic number.

613991627 is a deficient number, since it is larger than the sum of its proper divisors (276709).

613991627 is a wasteful number, since it uses less digits than its factorization.

613991627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276708.

The product of its digits is 122472, while the sum is 44.

The square root of 613991627 is about 24778.8544327618. The cubic root of 613991627 is about 849.9384624423.

The spelling of 613991627 in words is "six hundred thirteen million, nine hundred ninety-one thousand, six hundred twenty-seven".