897780013 has 16 divisors (see below), whose sum is σ = 1030530816. Its totient is φ = 774777600.

The previous prime is 897780007. The next prime is 897780031. The reversal of 897780013 is 310087798.

It is a cyclic number.

It is not a de Polignac number, because 897780013 - 2²⁵ = 864225581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897780713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19920 + ... + 46822.

It is an arithmetic number, because the mean of its divisors is an integer number (64408176).

Almost surely, 2^897780013 is an apocalyptic number.

It is an amenable number.

897780013 is a deficient number, since it is larger than the sum of its proper divisors (132750803).

897780013 is a wasteful number, since it uses less digits than its factorization.

897780013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27084.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 897780013 is about 29962.9773720837. The cubic root of 897780013 is about 964.6948888202.

The spelling of 897780013 in words is "eight hundred ninety-seven million, seven hundred eighty thousand, thirteen".