83612340 has 72 divisors (see below), whose sum is σ = 289860480. Its totient is φ = 19111104.

The previous prime is 83612297. The next prime is 83612357. The reversal of 83612340 is 4321638.

It is a happy number.

83612340 is a `hidden beast` number, since 8 + 3 + 612 + 3 + 40 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31920 + ... + 34439.

It is an arithmetic number, because the mean of its divisors is an integer number (4025840).

Almost surely, 2^83612340 is an apocalyptic number.

It is an amenable number.

83612340 is an abundant number, since it is smaller than the sum of its proper divisors (206248140).

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

83612340 is a wasteful number, since it uses less digits than its factorization.

83612340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66381 (or 66376 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 83612340 is about 9143.9783464311. The cubic root of 83612340 is about 437.2771588959.

Adding to 83612340 its reverse (4321638), we get a palindrome (87933978).

It can be divided in two parts, 8361 and 2340, that added together give a palindrome (10701).

The spelling of 83612340 in words is "eighty-three million, six hundred twelve thousand, three hundred forty".