84801997 has 24 divisors (see below), whose sum is σ = 105244800. Its totient is φ = 67931136.

The previous prime is 84801991. The next prime is 84802007. The reversal of 84801997 is 79910848.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-84801997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84801991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72973 + ... + 74125.

It is an arithmetic number, because the mean of its divisors is an integer number (4385200).

Almost surely, 2^84801997 is an apocalyptic number.

It is an amenable number.

84801997 is a deficient number, since it is larger than the sum of its proper divisors (20442803).

84801997 is a wasteful number, since it uses less digits than its factorization.

84801997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 84801997 is about 9208.7999761098. The cubic root of 84801997 is about 439.3412957115.

The spelling of 84801997 in words is "eighty-four million, eight hundred one thousand, nine hundred ninety-seven".