13640654 has 8 divisors (see below), whose sum is σ = 20564400. Its totient is φ = 6785856.

The previous prime is 13640639. The next prime is 13640677. The reversal of 13640654 is 45604631.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16739 + ... + 17534.

It is an arithmetic number, because the mean of its divisors is an integer number (2570550).

Almost surely, 2^13640654 is an apocalyptic number.

13640654 is a deficient number, since it is larger than the sum of its proper divisors (6923746).

13640654 is a wasteful number, since it uses less digits than its factorization.

13640654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34474.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 13640654 is about 3693.3256016766. The cubic root of 13640654 is about 238.9342442657.

The spelling of 13640654 in words is "thirteen million, six hundred forty thousand, six hundred fifty-four".