82991746 has 8 divisors (see below), whose sum is σ = 126836604. Its totient is φ = 40712880.

The previous prime is 82991719. The next prime is 82991759. The reversal of 82991746 is 64719928.

It can be written as a sum of positive squares in 2 ways, for example, as 81703521 + 1288225 = 9039^2 + 1135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 82991696 and 82991705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391365 + ... + 391576.

Almost surely, 2^82991746 is an apocalyptic number.

82991746 is a deficient number, since it is larger than the sum of its proper divisors (43844858).

82991746 is a wasteful number, since it uses less digits than its factorization.

82991746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782996.

The product of its digits is 217728, while the sum is 46.

The square root of 82991746 is about 9109.9805707806. The cubic root of 82991746 is about 436.1926070150.

The spelling of 82991746 in words is "eighty-two million, nine hundred ninety-one thousand, seven hundred forty-six".