61916133 has 8 divisors (see below), whose sum is σ = 84786208. Its totient is φ = 40161744.

The previous prime is 61916119. The next prime is 61916147. The reversal of 61916133 is 33161916.

It is an interprime number because it is at equal distance from previous prime (61916119) and next prime (61916147).

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

It is not a de Polignac number, because 61916133 - 2⁸ = 61915877 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 61916133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61911133) 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, 278791 + ... + 279012.

It is an arithmetic number, because the mean of its divisors is an integer number (10598276).

Almost surely, 2^61916133 is an apocalyptic number.

It is an amenable number.

61916133 is a deficient number, since it is larger than the sum of its proper divisors (22870075).

61916133 is a wasteful number, since it uses less digits than its factorization.

61916133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557843.

The product of its digits is 2916, while the sum is 30.

The square root of 61916133 is about 7868.6805120045. The cubic root of 61916133 is about 395.6106199585.

The spelling of 61916133 in words is "sixty-one million, nine hundred sixteen thousand, one hundred thirty-three".