36781001 has 4 divisors (see below), whose sum is σ = 37061904. Its totient is φ = 36500100.

The previous prime is 36780983. The next prime is 36781009. The reversal of 36781001 is 10018763.

36781001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 36781001 - 2⁶ = 36780937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36781009) 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 3 ways as a sum of consecutive naturals, for example, 140255 + ... + 140516.

It is an arithmetic number, because the mean of its divisors is an integer number (9265476).

Almost surely, 2^36781001 is an apocalyptic number.

It is an amenable number.

36781001 is a deficient number, since it is larger than the sum of its proper divisors (280903).

36781001 is a wasteful number, since it uses less digits than its factorization.

36781001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280902.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 36781001 is about 6064.7342068717. The cubic root of 36781001 is about 332.5634484229.

Adding to 36781001 its reverse (10018763), we get a palindrome (46799764).

The spelling of 36781001 in words is "thirty-six million, seven hundred eighty-one thousand, one".