36651561 has 8 divisors (see below), whose sum is σ = 48975264. Its totient is φ = 24381120.

The previous prime is 36651557. The next prime is 36651583. The reversal of 36651561 is 16515663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 36651561 - 2² = 36651557 is a prime.

It is a super-3 number, since 3×36651561³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (36651161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11680 + ... + 14481.

It is an arithmetic number, because the mean of its divisors is an integer number (6121908).

Almost surely, 2^36651561 is an apocalyptic number.

It is an amenable number.

36651561 is a deficient number, since it is larger than the sum of its proper divisors (12323703).

36651561 is a wasteful number, since it uses less digits than its factorization.

36651561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26631.

The product of its digits is 16200, while the sum is 33.

The square root of 36651561 is about 6054.0532703305. The cubic root of 36651561 is about 332.1728698843.

The spelling of 36651561 in words is "thirty-six million, six hundred fifty-one thousand, five hundred sixty-one".