83646545 has 16 divisors (see below), whose sum is σ = 106496208. Its totient is φ = 62853120.

The previous prime is 83646533. The next prime is 83646557. The reversal of 83646545 is 54564638.

It is an interprime number because it is at equal distance from previous prime (83646533) and next prime (83646557).

It can be written as a sum of positive squares in 8 ways, for example, as 11888704 + 71757841 = 3448^2 + 8471^2 .

It is not a de Polignac number, because 83646545 - 2⁸ = 83646289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74327 + ... + 75443.

It is an arithmetic number, because the mean of its divisors is an integer number (6656013).

Almost surely, 2^83646545 is an apocalyptic number.

83646545 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

83646545 is a deficient number, since it is larger than the sum of its proper divisors (22849663).

83646545 is a wasteful number, since it uses less digits than its factorization.

83646545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020.

The product of its digits is 345600, while the sum is 41.

The square root of 83646545 is about 9145.8485117566. The cubic root of 83646545 is about 437.3367793860.

The spelling of 83646545 in words is "eighty-three million, six hundred forty-six thousand, five hundred forty-five".