897954691 has 2 divisors, whose sum is σ = 897954692. Its totient is φ = 897954690.

The previous prime is 897954683. The next prime is 897954713. The reversal of 897954691 is 196459798.

897954691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 897954691 - 2³ = 897954683 is a prime.

It is not a weakly prime, because it can be changed into another prime (897954641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448977345 + 448977346.

It is an arithmetic number, because the mean of its divisors is an integer number (448977346).

Almost surely, 2^897954691 is an apocalyptic number.

897954691 is a deficient number, since it is larger than the sum of its proper divisors (1).

897954691 is an equidigital number, since it uses as much as digits as its factorization.

897954691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 58.

The square root of 897954691 is about 29965.8921275506. The cubic root of 897954691 is about 964.7574505627.

The spelling of 897954691 in words is "eight hundred ninety-seven million, nine hundred fifty-four thousand, six hundred ninety-one".