61765992 has 48 divisors (see below), whose sum is σ = 169416000. Its totient is φ = 20326176.

The previous prime is 61765939. The next prime is 61765993. The reversal of 61765992 is 29956716.

It is a happy number.

61765992 is nontrivially palindromic in base 7.

It is not an unprimeable number, because it can be changed into a prime (61765993) 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, 259 + ... + 11117.

It is an arithmetic number, because the mean of its divisors is an integer number (3529500).

Almost surely, 2^61765992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61765992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84708000).

61765992 is an abundant number, since it is smaller than the sum of its proper divisors (107650008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61765992 is a wasteful number, since it uses less digits than its factorization.

61765992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10950 (or 10943 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 61765992 is about 7859.1343034713. The cubic root of 61765992 is about 395.2905878599.

The spelling of 61765992 in words is "sixty-one million, seven hundred sixty-five thousand, nine hundred ninety-two".