83916690 has 128 divisors (see below), whose sum is σ = 244629504. Its totient is φ = 18144000.

The previous prime is 83916683. The next prime is 83916697. The reversal of 83916690 is 9661938.

It is an interprime number because it is at equal distance from previous prime (83916683) and next prime (83916697).

It is a super-2 number, since 2×83916690² = 14084021721112200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83916697) 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 63 ways as a sum of consecutive naturals, for example, 132675 + ... + 133305.

It is an arithmetic number, because the mean of its divisors is an integer number (1911168).

Almost surely, 2^83916690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83916690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122314752).

83916690 is an abundant number, since it is smaller than the sum of its proper divisors (160712814).

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

83916690 is a wasteful number, since it uses less digits than its factorization.

83916690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 83916690 is about 9160.6053293437. The cubic root of 83916690 is about 437.8070812799.

The spelling of 83916690 in words is "eighty-three million, nine hundred sixteen thousand, six hundred ninety".