69990000 has 100 divisors (see below), whose sum is σ = 226033896. Its totient is φ = 18656000.

The previous prime is 69989923. The next prime is 69990029. The reversal of 69990000 is 9996.

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28834 + ... + 31166.

Almost surely, 2^69990000 is an apocalyptic number.

69990000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69990000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113016948).

69990000 is an abundant number, since it is smaller than the sum of its proper divisors (156043896).

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

69990000 is a wasteful number, since it uses less digits than its factorization.

69990000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364 (or 2343 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 69990000 is about 8366.0026296912. The cubic root of 69990000 is about 412.1089038782.

Adding to 69990000 its reverse (9996), we get a palindrome (69999996).

The spelling of 69990000 in words is "sixty-nine million, nine hundred ninety thousand".