2617897957 has 8 divisors (see below), whose sum is σ = 2756197760. Its totient is φ = 2479649760.

The previous prime is 2617897939. The next prime is 2617897967. The reversal of 2617897957 is 7597987162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2617897957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2617897895 and 2617897904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2617897907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134548 + ... + 152770.

It is an arithmetic number, because the mean of its divisors is an integer number (344524720).

Almost surely, 2^2617897957 is an apocalyptic number.

It is an amenable number.

2617897957 is a deficient number, since it is larger than the sum of its proper divisors (138299803).

2617897957 is a wasteful number, since it uses less digits than its factorization.

2617897957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25803.

The product of its digits is 13335840, while the sum is 61.

The square root of 2617897957 is about 51165.3980439906. The cubic root of 2617897957 is about 1378.2169011730.

The spelling of 2617897957 in words is "two billion, six hundred seventeen million, eight hundred ninety-seven thousand, nine hundred fifty-seven".