897782520 has 64 divisors (see below), whose sum is σ = 2710559520. Its totient is φ = 237878784.

The previous prime is 897782497. The next prime is 897782521. The reversal of 897782520 is 25287798.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 897782520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897782521) 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, 4987 + ... + 42666.

Almost surely, 2^897782520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 897782520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1355279760).

897782520 is an abundant number, since it is smaller than the sum of its proper divisors (1812777000).

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

897782520 is a wasteful number, since it uses less digits than its factorization.

897782520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47824 (or 47820 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 897782520 is about 29963.0192070158. The cubic root of 897782520 is about 964.6957867713.

The spelling of 897782520 in words is "eight hundred ninety-seven million, seven hundred eighty-two thousand, five hundred twenty".