13640466 has 16 divisors (see below), whose sum is σ = 31178304. Its totient is φ = 3897264.

The previous prime is 13640453. The next prime is 13640479. The reversal of 13640466 is 66404631.

It is an interprime number because it is at equal distance from previous prime (13640453) and next prime (13640479).

It is a Curzon 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, 162345 + ... + 162428.

It is an arithmetic number, because the mean of its divisors is an integer number (1948644).

Almost surely, 2^13640466 is an apocalyptic number.

13640466 is an abundant number, since it is smaller than the sum of its proper divisors (17537838).

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

13640466 is a wasteful number, since it uses less digits than its factorization.

13640466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324785.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 13640466 is about 3693.3001502721. The cubic root of 13640466 is about 238.9331465705.

The spelling of 13640466 in words is "thirteen million, six hundred forty thousand, four hundred sixty-six".