36147681 has 8 divisors (see below), whose sum is σ = 53552160. Its totient is φ = 24098436.

The previous prime is 36147679. The next prime is 36147689. The reversal of 36147681 is 18674163.

It is not a de Polignac number, because 36147681 - 2¹ = 36147679 is a prime.

It is a super-2 number, since 2×36147681² = 2613309683355522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36147689) 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, 669375 + ... + 669428.

It is an arithmetic number, because the mean of its divisors is an integer number (6694020).

Almost surely, 2^36147681 is an apocalyptic number.

It is an amenable number.

36147681 is a deficient number, since it is larger than the sum of its proper divisors (17404479).

36147681 is a wasteful number, since it uses less digits than its factorization.

36147681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338812 (or 1338806 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 36147681 is about 6012.2941544805. The cubic root of 36147681 is about 330.6436199242.

The spelling of 36147681 in words is "thirty-six million, one hundred forty-seven thousand, six hundred eighty-one".