897774655 has 8 divisors (see below), whose sum is σ = 1078009632. Its totient is φ = 717766368.

The previous prime is 897774649. The next prime is 897774671. The reversal of 897774655 is 556477798.

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 897774655 - 2¹¹ = 897772607 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 897774655.

It is a congruent number.

It is an unprimeable number.

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, 47832 + ... + 63901.

It is an arithmetic number, because the mean of its divisors is an integer number (134751204).

Almost surely, 2^897774655 is an apocalyptic number.

897774655 is a deficient number, since it is larger than the sum of its proper divisors (180234977).

897774655 is a wasteful number, since it uses less digits than its factorization.

897774655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113345.

The product of its digits is 14817600, while the sum is 58.

The square root of 897774655 is about 29962.8879616101. The cubic root of 897774655 is about 964.6929696991.

The spelling of 897774655 in words is "eight hundred ninety-seven million, seven hundred seventy-four thousand, six hundred fifty-five".