7776036 has 36 divisors (see below), whose sum is σ = 19983964. Its totient is φ = 2548800.

The previous prime is 7775981. The next prime is 7776059. The reversal of 7776036 is 6306777.

It can be written as a sum of positive squares in 2 ways, for example, as 1425636 + 6350400 = 1194^2 + 2520^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 426 + ... + 3966.

Almost surely, 2^7776036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7776036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9991982).

7776036 is an abundant number, since it is smaller than the sum of its proper divisors (12207928).

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

7776036 is a wasteful number, since it uses less digits than its factorization.

7776036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612 (or 3607 counting only the distinct ones).

The product of its (nonzero) digits is 37044, while the sum is 36.

The square root of 7776036 is about 2788.5544642341. The cubic root of 7776036 is about 198.1159406672.

The spelling of 7776036 in words is "seven million, seven hundred seventy-six thousand, thirty-six".