83645355 has 32 divisors (see below), whose sum is σ = 142276608. Its totient is φ = 41817600.

The previous prime is 83645351. The next prime is 83645357. The reversal of 83645355 is 55354638.

It is not a de Polignac number, because 83645355 - 2² = 83645351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83645351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83910 + ... + 84900.

It is an arithmetic number, because the mean of its divisors is an integer number (4446144).

Almost surely, 2^83645355 is an apocalyptic number.

83645355 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

83645355 is a deficient number, since it is larger than the sum of its proper divisors (58631253).

83645355 is a wasteful number, since it uses less digits than its factorization.

83645355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347.

The product of its digits is 216000, while the sum is 39.

The square root of 83645355 is about 9145.7834546856. The cubic root of 83645355 is about 437.3347054481.

The spelling of 83645355 in words is "eighty-three million, six hundred forty-five thousand, three hundred fifty-five".