99867770 has 16 divisors (see below), whose sum is σ = 181509120. Its totient is φ = 39558864.

The previous prime is 99867763. The next prime is 99867799. The reversal of 99867770 is 7776899.

It is a happy number.

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, 47450 + ... + 49509.

It is an arithmetic number, because the mean of its divisors is an integer number (11344320).

Almost surely, 2^99867770 is an apocalyptic number.

99867770 is a deficient number, since it is larger than the sum of its proper divisors (81641350).

99867770 is a wasteful number, since it uses less digits than its factorization.

99867770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97069.

The product of its (nonzero) digits is 1333584, while the sum is 53.

The square root of 99867770 is about 9993.3863129572. The cubic root of 99867770 is about 463.9542073566.

The spelling of 99867770 in words is "ninety-nine million, eight hundred sixty-seven thousand, seven hundred seventy".