284643961 has 16 divisors (see below), whose sum is σ = 344361600. Its totient is φ = 230082048.

The previous prime is 284643917. The next prime is 284643967. The reversal of 284643961 is 169346482.

It is a happy number.

It is not a de Polignac number, because 284643961 - 2⁷ = 284643833 is a prime.

It is a super-6 number, since 6×284643961⁶ (a number of 52 digits) contains 666666 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (284643967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7576 + ... + 25033.

It is an arithmetic number, because the mean of its divisors is an integer number (21522600).

Almost surely, 2^284643961 is an apocalyptic number.

It is an amenable number.

284643961 is a deficient number, since it is larger than the sum of its proper divisors (59717639).

284643961 is a wasteful number, since it uses less digits than its factorization.

284643961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32688.

The product of its digits is 248832, while the sum is 43.

The square root of 284643961 is about 16871.3947556211. The cubic root of 284643961 is about 657.8102828853.

The spelling of 284643961 in words is "two hundred eighty-four million, six hundred forty-three thousand, nine hundred sixty-one".