13640074 has 16 divisors (see below), whose sum is σ = 23510016. Its totient is φ = 5814000.

The previous prime is 13640071. The next prime is 13640089. The reversal of 13640074 is 47004631.

It is not an unprimeable number, because it can be changed into a prime (13640071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124 + ... + 5224.

It is an arithmetic number, because the mean of its divisors is an integer number (1469376).

Almost surely, 2^13640074 is an apocalyptic number.

13640074 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13640074 is a deficient number, since it is larger than the sum of its proper divisors (9869942).

13640074 is a wasteful number, since it uses less digits than its factorization.

13640074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 13640074 is about 3693.2470808220. The cubic root of 13640074 is about 238.9308577266.

The spelling of 13640074 in words is "thirteen million, six hundred forty thousand, seventy-four".