13400761 has 4 divisors (see below), whose sum is σ = 14619024. Its totient is φ = 12182500.

The previous prime is 13400741. The next prime is 13400767. The reversal of 13400761 is 16700431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13400761 - 2⁷ = 13400633 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13400767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609115 + ... + 609136.

It is an arithmetic number, because the mean of its divisors is an integer number (3654756).

Almost surely, 2^13400761 is an apocalyptic number.

13400761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13400761 is a deficient number, since it is larger than the sum of its proper divisors (1218263).

13400761 is a wasteful number, since it uses less digits than its factorization.

13400761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218262.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 13400761 is about 3660.7049867478. The cubic root of 13400761 is about 237.5252700720.

It can be divided in two parts, 13400 and 761, that added together give a square (14161 = 119²).

The spelling of 13400761 in words is "thirteen million, four hundred thousand, seven hundred sixty-one".