901285643 has 4 divisors (see below), whose sum is σ = 906004608. Its totient is φ = 896566680.

The previous prime is 901285639. The next prime is 901285663. The reversal of 901285643 is 346582109.

It is a happy number.

901285643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346582109 = 89 ⋅3894181.

It is a cyclic number.

It is not a de Polignac number, because 901285643 - 2² = 901285639 is a prime.

It is a super-3 number, since 3×901285643³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 901285597 and 901285606.

It is not an unprimeable number, because it can be changed into a prime (901285663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2359196 + ... + 2359577.

It is an arithmetic number, because the mean of its divisors is an integer number (226501152).

Almost surely, 2^901285643 is an apocalyptic number.

901285643 is a deficient number, since it is larger than the sum of its proper divisors (4718965).

901285643 is a wasteful number, since it uses less digits than its factorization.

901285643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718964.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 901285643 is about 30021.4197365814. The cubic root of 901285643 is about 965.9488972305.

The spelling of 901285643 in words is "nine hundred one million, two hundred eighty-five thousand, six hundred forty-three".