99997266 has 16 divisors (see below), whose sum is σ = 210520800. Its totient is φ = 31578048.

The previous prime is 99997243. The next prime is 99997267. The reversal of 99997266 is 66279999.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99997267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438471 + ... + 438698.

It is an arithmetic number, because the mean of its divisors is an integer number (13157550).

Almost surely, 2^99997266 is an apocalyptic number.

99997266 is an abundant number, since it is smaller than the sum of its proper divisors (110523534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99997266 is a wasteful number, since it uses less digits than its factorization.

99997266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877193.

The product of its digits is 3306744, while the sum is 57.

The square root of 99997266 is about 9999.8632990656. The cubic root of 99997266 is about 464.1546532881.

The spelling of 99997266 in words is "ninety-nine million, nine hundred ninety-seven thousand, two hundred sixty-six".