83061285 has 16 divisors (see below), whose sum is σ = 136140480. Its totient is φ = 43218560.

The previous prime is 83061281. The next prime is 83061287. The reversal of 83061285 is 58216038.

It is a happy number.

It is not a de Polignac number, because 83061285 - 2² = 83061281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83061281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66915 + ... + 68144.

It is an arithmetic number, because the mean of its divisors is an integer number (8508780).

Almost surely, 2^83061285 is an apocalyptic number.

It is an amenable number.

83061285 is a deficient number, since it is larger than the sum of its proper divisors (53079195).

83061285 is a wasteful number, since it uses less digits than its factorization.

83061285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135108.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 83061285 is about 9113.7964098393. The cubic root of 83061285 is about 436.3144019775.

It can be divided in two parts, 8306 and 1285, that added together give a triangular number (9591 = T₁₃₈).

The spelling of 83061285 in words is "eighty-three million, sixty-one thousand, two hundred eighty-five".