61887933 has 12 divisors (see below), whose sum is σ = 89624028. Its totient is φ = 41152320.

The previous prime is 61887919. The next prime is 61887949. The reversal of 61887933 is 33978816.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29192409 + 32695524 = 5403^2 + 5718^2 .

It is not a de Polignac number, because 61887933 - 2⁶ = 61887869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61887233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5088 + ... + 12233.

It is an arithmetic number, because the mean of its divisors is an integer number (7468669).

Almost surely, 2^61887933 is an apocalyptic number.

It is an amenable number.

61887933 is a deficient number, since it is larger than the sum of its proper divisors (27736095).

61887933 is a wasteful number, since it uses less digits than its factorization.

61887933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17724 (or 17721 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 61887933 is about 7866.8883937679. Note that the first 3 decimals coincide. The cubic root of 61887933 is about 395.5505499192.

The spelling of 61887933 in words is "sixty-one million, eight hundred eighty-seven thousand, nine hundred thirty-three".