61816968 has 48 divisors (see below), whose sum is σ = 167806080. Its totient is φ = 20558304.

The previous prime is 61816967. The next prime is 61816969. The reversal of 61816968 is 86961816.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61816967) and next prime (61816969).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (61816961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45921 + ... + 47247.

It is an arithmetic number, because the mean of its divisors is an integer number (3495960).

Almost surely, 2^61816968 is an apocalyptic number.

It is an amenable number.

61816968 is an abundant number, since it is smaller than the sum of its proper divisors (105989112).

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

61816968 is a wasteful number, since it uses less digits than its factorization.

61816968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986 (or 1979 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 61816968 is about 7862.3767398923. The cubic root of 61816968 is about 395.3993035219.

The spelling of 61816968 in words is "sixty-one million, eight hundred sixteen thousand, nine hundred sixty-eight".