897699761 has 16 divisors (see below), whose sum is σ = 1047669504. Its totient is φ = 753318144.

The previous prime is 897699749. The next prime is 897699763. The reversal of 897699761 is 167996798.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 897699761 - 2¹⁸ = 897437617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 897699694 and 897699703.

It is not an unprimeable number, because it can be changed into a prime (897699763) 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, 63596 + ... + 76418.

It is an arithmetic number, because the mean of its divisors is an integer number (65479344).

Almost surely, 2^897699761 is an apocalyptic number.

It is an amenable number.

897699761 is a deficient number, since it is larger than the sum of its proper divisors (149969743).

897699761 is a wasteful number, since it uses less digits than its factorization.

897699761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13040.

The product of its digits is 10287648, while the sum is 62.

The square root of 897699761 is about 29961.6381561489. The cubic root of 897699761 is about 964.6661434705. Note that the first 3 decimals are identical.

The spelling of 897699761 in words is "eight hundred ninety-seven million, six hundred ninety-nine thousand, seven hundred sixty-one".