897547738 has 8 divisors (see below), whose sum is σ = 1392746580. Its totient is φ = 433298880.

The previous prime is 897547733. The next prime is 897547741. The reversal of 897547738 is 837745798.

It can be written as a sum of positive squares in 2 ways, for example, as 862773129 + 34774609 = 29373^2 + 5897^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (58), and also a Moran number because the ratio is a prime number: 15474961 = 897547738 / (8 + 9 + 7 + 5 + 4 + 7 + 7 + 3 + 8).

It is not an unprimeable number, because it can be changed into a prime (897547733) 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, 7737423 + ... + 7737538.

Almost surely, 2^897547738 is an apocalyptic number.

897547738 is a deficient number, since it is larger than the sum of its proper divisors (495198842).

897547738 is a wasteful number, since it uses less digits than its factorization.

897547738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15474992.

The product of its digits is 11854080, while the sum is 58.

The square root of 897547738 is about 29959.1010879833. The cubic root of 897547738 is about 964.6116858717.

The spelling of 897547738 in words is "eight hundred ninety-seven million, five hundred forty-seven thousand, seven hundred thirty-eight".