82961408 has 22 divisors (see below), whose sum is σ = 165843846. Its totient is φ = 41480192.

The previous prime is 82961407. The next prime is 82961413. The reversal of 82961408 is 80416928.

It can be written as a sum of positive squares in only one way, i.e., 82591744 + 369664 = 9088^2 + 608^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82961407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39485 + ... + 41532.

Almost surely, 2^82961408 is an apocalyptic number.

It is an amenable number.

82961408 is a deficient number, since it is larger than the sum of its proper divisors (82882438).

82961408 is an equidigital number, since it uses as much as digits as its factorization.

82961408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81037 (or 81019 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 82961408 is about 9108.3153217266. The cubic root of 82961408 is about 436.1394498246.

The spelling of 82961408 in words is "eighty-two million, nine hundred sixty-one thousand, four hundred eight".