897886747 has 2 divisors, whose sum is σ = 897886748. Its totient is φ = 897886746.

The previous prime is 897886729. The next prime is 897886751. The reversal of 897886747 is 747688798.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 897886747 - 2²³ = 889498139 is a prime.

It is a super-2 number, since 2×897886747² = 1612401220876484018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (897886147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448943373 + 448943374.

It is an arithmetic number, because the mean of its divisors is an integer number (448943374).

Almost surely, 2^897886747 is an apocalyptic number.

897886747 is a deficient number, since it is larger than the sum of its proper divisors (1).

897886747 is an equidigital number, since it uses as much as digits as its factorization.

897886747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37933056, while the sum is 64.

The square root of 897886747 is about 29964.7584171807. The cubic root of 897886747 is about 964.7331170656.

The spelling of 897886747 in words is "eight hundred ninety-seven million, eight hundred eighty-six thousand, seven hundred forty-seven".