13087774 has 24 divisors (see below), whose sum is σ = 23136624. Its totient is φ = 5436000.

The previous prime is 13087771. The next prime is 13087777. The reversal of 13087774 is 47778031.

13087774 = 197² + 198² + ... + 360².

It is an interprime number because it is at equal distance from previous prime (13087771) and next prime (13087777).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13087771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86599 + ... + 86749.

It is an arithmetic number, because the mean of its divisors is an integer number (964026).

Almost surely, 2^13087774 is an apocalyptic number.

13087774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13087774 is a deficient number, since it is larger than the sum of its proper divisors (10048850).

13087774 is an equidigital number, since it uses as much as digits as its factorization.

13087774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 13087774 is about 3617.7028623147. The cubic root of 13087774 is about 235.6614772074.

It can be divided in two parts, 13087 and 774, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 13087774 in words is "thirteen million, eighty-seven thousand, seven hundred seventy-four".