99278265 has 8 divisors (see below), whose sum is σ = 158845248. Its totient is φ = 52948400.

The previous prime is 99278251. The next prime is 99278303. The reversal of 99278265 is 56287299.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99278265 - 2⁹ = 99277753 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3309261 + ... + 3309290.

It is an arithmetic number, because the mean of its divisors is an integer number (19855656).

Almost surely, 2^99278265 is an apocalyptic number.

It is an amenable number.

99278265 is a deficient number, since it is larger than the sum of its proper divisors (59566983).

99278265 is a wasteful number, since it uses less digits than its factorization.

99278265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6618559.

The product of its digits is 544320, while the sum is 48.

The square root of 99278265 is about 9963.8479012879. The cubic root of 99278265 is about 463.0395203761.

The spelling of 99278265 in words is "ninety-nine million, two hundred seventy-eight thousand, two hundred sixty-five".