83420646 has 16 divisors (see below), whose sum is σ = 172594800. Its totient is φ = 26847968.

The previous prime is 83420641. The next prime is 83420651. The reversal of 83420646 is 64602438.

It is an interprime number because it is at equal distance from previous prime (83420641) and next prime (83420651).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83420641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239541 + ... + 239888.

It is an arithmetic number, because the mean of its divisors is an integer number (10787175).

Almost surely, 2^83420646 is an apocalyptic number.

83420646 is an abundant number, since it is smaller than the sum of its proper divisors (89174154).

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

83420646 is a wasteful number, since it uses less digits than its factorization.

83420646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479463.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 83420646 is about 9133.4903514483. The cubic root of 83420646 is about 436.9427284011.

The spelling of 83420646 in words is "eighty-three million, four hundred twenty thousand, six hundred forty-six".