61999996 has 24 divisors (see below), whose sum is σ = 113992704. Its totient is φ = 29449200.

The previous prime is 61999967. The next prime is 61999997. The reversal of 61999996 is 69999916.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 61999996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61999997) 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, 11661 + ... + 16123.

It is an arithmetic number, because the mean of its divisors is an integer number (4749696).

Almost surely, 2^61999996 is an apocalyptic number.

It is an amenable number.

61999996 is a deficient number, since it is larger than the sum of its proper divisors (51992708).

61999996 is a wasteful number, since it uses less digits than its factorization.

61999996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4641 (or 4639 counting only the distinct ones).

The product of its digits is 2125764, while the sum is 58.

The square root of 61999996 is about 7874.0076200116. The cubic root of 61999996 is about 395.7891524564.

It can be divided in two parts, 6 and 1999996, that added together give a palindrome (2000002).

The spelling of 61999996 in words is "sixty-one million, nine hundred ninety-nine thousand, nine hundred ninety-six".