897812956340 has 24 divisors (see below), whose sum is σ = 1950421251240. Its totient is φ = 346741555328.

The previous prime is 897812956319. The next prime is 897812956343. The reversal of 897812956340 is 43659218798.

It can be written as a sum of positive squares in 4 ways, for example, as 89058077476 + 808754878864 = 298426^2 + 899308^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897812956343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 773976107 + ... + 773977266.

It is an arithmetic number, because the mean of its divisors is an integer number (81267552135).

It is a 1-persistent number, because it is pandigital, but 2⋅897812956340 = 1795625912680 is not.

Almost surely, 2^897812956340 is an apocalyptic number.

It is an amenable number.

897812956340 is an abundant number, since it is smaller than the sum of its proper divisors (1052608294900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

897812956340 is a wasteful number, since it uses less digits than its factorization.

897812956340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547953411 (or 1547953409 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 62.

The spelling of 897812956340 in words is "eight hundred ninety-seven billion, eight hundred twelve million, nine hundred fifty-six thousand, three hundred forty".