897768418 has 4 divisors (see below), whose sum is σ = 1346652630. Its totient is φ = 448884208.

The previous prime is 897768397. The next prime is 897768467. The reversal of 897768418 is 814867798.

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

It can be written as a sum of positive squares in only one way, i.e., 853983729 + 43784689 = 29223^2 + 6617^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224442103 + ... + 224442106.

Almost surely, 2^897768418 is an apocalyptic number.

897768418 is a deficient number, since it is larger than the sum of its proper divisors (448884212).

897768418 is a wasteful number, since it uses less digits than its factorization.

897768418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448884211.

The product of its digits is 5419008, while the sum is 58.

The square root of 897768418 is about 29962.7838826769. The cubic root of 897768418 is about 964.6907357295.

The spelling of 897768418 in words is "eight hundred ninety-seven million, seven hundred sixty-eight thousand, four hundred eighteen".