99672648 has 64 divisors (see below), whose sum is σ = 256296960. Its totient is φ = 32288256.

The previous prime is 99672647. The next prime is 99672673. The reversal of 99672648 is 84627699.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 99672648.

It is not an unprimeable number, because it can be changed into a prime (99672647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161236 + ... + 161852.

It is an arithmetic number, because the mean of its divisors is an integer number (4004640).

Almost surely, 2^99672648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99672648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128148480).

99672648 is an abundant number, since it is smaller than the sum of its proper divisors (156624312).

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

99672648 is a wasteful number, since it uses less digits than its factorization.

99672648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806 (or 802 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The square root of 99672648 is about 9983.6189831143. The cubic root of 99672648 is about 463.6518519030.

The spelling of 99672648 in words is "ninety-nine million, six hundred seventy-two thousand, six hundred forty-eight".