997470537 has 16 divisors (see below), whose sum is σ = 1520440320. Its totient is φ = 569801232.

The previous prime is 997470499. The next prime is 997470541. The reversal of 997470537 is 735074799.

997470537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 997470537 - 2¹⁸ = 997208393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 997470537.

It is not an unprimeable number, because it can be changed into a prime (997470557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87514 + ... + 98252.

It is an arithmetic number, because the mean of its divisors is an integer number (95027520).

Almost surely, 2^997470537 is an apocalyptic number.

It is an amenable number.

997470537 is a deficient number, since it is larger than the sum of its proper divisors (522969783).

997470537 is a wasteful number, since it uses less digits than its factorization.

997470537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15172.

The product of its (nonzero) digits is 1666980, while the sum is 51.

The square root of 997470537 is about 31582.7569569219. The cubic root of 997470537 is about 999.1561337567.

The spelling of 997470537 in words is "nine hundred ninety-seven million, four hundred seventy thousand, five hundred thirty-seven".