897145407 has 6 divisors (see below), whose sum is σ = 1295876712. Its totient is φ = 598096932.

The previous prime is 897145373. The next prime is 897145411. The reversal of 897145407 is 704541798.

It is a happy number.

897145407 is a `hidden beast` number, since 8 + 97 + 14 + 540 + 7 = 666.

It is not a de Polignac number, because 897145407 - 2¹⁶ = 897079871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897144407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49841403 + ... + 49841420.

It is an arithmetic number, because the mean of its divisors is an integer number (215979452).

Almost surely, 2^897145407 is an apocalyptic number.

897145407 is a deficient number, since it is larger than the sum of its proper divisors (398731305).

897145407 is a wasteful number, since it uses less digits than its factorization.

897145407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99682829 (or 99682826 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 897145407 is about 29952.3856645844. The cubic root of 897145407 is about 964.4675333955.

The spelling of 897145407 in words is "eight hundred ninety-seven million, one hundred forty-five thousand, four hundred seven".