12999654 has 48 divisors (see below), whose sum is σ = 29343600. Its totient is φ = 4155840.

The previous prime is 12999653. The next prime is 12999673. The reversal of 12999654 is 45699921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12999653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87172 + ... + 87320.

It is an arithmetic number, because the mean of its divisors is an integer number (611325).

Almost surely, 2^12999654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12999654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14671800).

12999654 is an abundant number, since it is smaller than the sum of its proper divisors (16343946).

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

12999654 is a wasteful number, since it uses less digits than its factorization.

12999654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 322 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 12999654 is about 3605.5032935777. The cubic root of 12999654 is about 235.1313826977.

The spelling of 12999654 in words is "twelve million, nine hundred ninety-nine thousand, six hundred fifty-four".