617970551 has 8 divisors (see below), whose sum is σ = 674451984. Its totient is φ = 561539520.

The previous prime is 617970533. The next prime is 617970571. The reversal of 617970551 is 155079716.

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

It is a cyclic number.

It is not a de Polignac number, because 617970551 - 2⁶ = 617970487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 617970499 and 617970508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617970511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15845 + ... + 38561.

It is an arithmetic number, because the mean of its divisors is an integer number (84306498).

Almost surely, 2^617970551 is an apocalyptic number.

617970551 is a deficient number, since it is larger than the sum of its proper divisors (56481433).

617970551 is a wasteful number, since it uses less digits than its factorization.

617970551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25201.

The product of its (nonzero) digits is 66150, while the sum is 41.

The square root of 617970551 is about 24859.0134760010. The cubic root of 617970551 is about 851.7704969176.

The spelling of 617970551 in words is "six hundred seventeen million, nine hundred seventy thousand, five hundred fifty-one".