997465618 has 8 divisors (see below), whose sum is σ = 1524428748. Its totient is φ = 489322704.

The previous prime is 997465561. The next prime is 997465619. The reversal of 997465618 is 816564799.

997465618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 956850489 + 40615129 = 30933^2 + 6373^2 .

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

It is not an unprimeable number, because it can be changed into a prime (997465619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4704921 + ... + 4705132.

Almost surely, 2^997465618 is an apocalyptic number.

997465618 is a deficient number, since it is larger than the sum of its proper divisors (526963130).

997465618 is a wasteful number, since it uses less digits than its factorization.

997465618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9410108.

The product of its digits is 3265920, while the sum is 55.

The square root of 997465618 is about 31582.6790820538. The cubic root of 997465618 is about 999.1544913165.

The spelling of 997465618 in words is "nine hundred ninety-seven million, four hundred sixty-five thousand, six hundred eighteen".