897284672739 has 128 divisors (see below), whose sum is σ = 1668397660160. Its totient is φ = 463993920000.

The previous prime is 897284672701. The next prime is 897284672749. The reversal of 897284672739 is 937276482798.

897284672739 is a `hidden beast` number, since 8 + 97 + 2 + 8 + 467 + 2 + 73 + 9 = 666.

897284672739 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-897284672739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (897284672749) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 46002489 + ... + 46021989.

It is an arithmetic number, because the mean of its divisors is an integer number (13034356720).

Almost surely, 2^897284672739 is an apocalyptic number.

897284672739 is a deficient number, since it is larger than the sum of its proper divisors (771112987421).

897284672739 is a wasteful number, since it uses less digits than its factorization.

897284672739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19898 (or 19892 counting only the distinct ones).

The product of its digits is 512096256, while the sum is 72.

The spelling of 897284672739 in words is "eight hundred ninety-seven billion, two hundred eighty-four million, six hundred seventy-two thousand, seven hundred thirty-nine".