82645061 has 4 divisors (see below), whose sum is σ = 82723872. Its totient is φ = 82566252.

The previous prime is 82645051. The next prime is 82645063. The reversal of 82645061 is 16054628.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82645061 - 2⁶ = 82644997 is a prime.

It is a super-2 number, since 2×82645061² = 13660412215387442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82645063) 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 3 ways as a sum of consecutive naturals, for example, 37811 + ... + 39936.

It is an arithmetic number, because the mean of its divisors is an integer number (20680968).

Almost surely, 2^82645061 is an apocalyptic number.

It is an amenable number.

82645061 is a deficient number, since it is larger than the sum of its proper divisors (78811).

82645061 is a wasteful number, since it uses less digits than its factorization.

82645061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78810.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 82645061 is about 9090.9329004234. The cubic root of 82645061 is about 435.5843839115.

Adding to 82645061 its reverse (16054628), we get a palindrome (98699689).

The spelling of 82645061 in words is "eighty-two million, six hundred forty-five thousand, sixty-one".