897015785 has 4 divisors (see below), whose sum is σ = 1076418948. Its totient is φ = 717612624.

The previous prime is 897015677. The next prime is 897015799. The reversal of 897015785 is 587510798.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 287370304 + 609645481 = 16952^2 + 24691^2 .

It is a cyclic number.

It is not a de Polignac number, because 897015785 - 2⁸ = 897015529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89701574 + ... + 89701583.

It is an arithmetic number, because the mean of its divisors is an integer number (269104737).

Almost surely, 2^897015785 is an apocalyptic number.

It is an amenable number.

897015785 is a deficient number, since it is larger than the sum of its proper divisors (179403163).

897015785 is a wasteful number, since it uses less digits than its factorization.

897015785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179403162.

The product of its (nonzero) digits is 705600, while the sum is 50.

The square root of 897015785 is about 29950.2217854893. The cubic root of 897015785 is about 964.4210815305.

The spelling of 897015785 in words is "eight hundred ninety-seven million, fifteen thousand, seven hundred eighty-five".