61864133 has 8 divisors (see below), whose sum is σ = 65906400. Its totient is φ = 57900528.

The previous prime is 61864109. The next prime is 61864147. The reversal of 61864133 is 33146816.

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

It is a cyclic number.

It is not a de Polignac number, because 61864133 - 2¹⁸ = 61601989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61864133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61864633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18038 + ... + 21191.

It is an arithmetic number, because the mean of its divisors is an integer number (8238300).

Almost surely, 2^61864133 is an apocalyptic number.

It is an amenable number.

61864133 is a deficient number, since it is larger than the sum of its proper divisors (4042267).

61864133 is a wasteful number, since it uses less digits than its factorization.

61864133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39331.

The product of its digits is 10368, while the sum is 32.

The square root of 61864133 is about 7865.3755790808. The cubic root of 61864133 is about 395.4998383094.

The spelling of 61864133 in words is "sixty-one million, eight hundred sixty-four thousand, one hundred thirty-three".