920420636 has 6 divisors (see below), whose sum is σ = 1610736120. Its totient is φ = 460210316.

The previous prime is 920420593. The next prime is 920420639. The reversal of 920420636 is 636024029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920420639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115052576 + ... + 115052583.

It is an arithmetic number, because the mean of its divisors is an integer number (268456020).

Almost surely, 2^920420636 is an apocalyptic number.

It is an amenable number.

920420636 is a deficient number, since it is larger than the sum of its proper divisors (690315484).

920420636 is a wasteful number, since it uses less digits than its factorization.

920420636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230105163 (or 230105161 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 920420636 is about 30338.4349629311. The cubic root of 920420636 is about 972.7370304000.

The spelling of 920420636 in words is "nine hundred twenty million, four hundred twenty thousand, six hundred thirty-six".