4020658 has 4 divisors (see below), whose sum is σ = 6030990. Its totient is φ = 2010328.

The previous prime is 4020641. The next prime is 4020671. The reversal of 4020658 is 8560204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4012009 + 8649 = 2003^2 + 93^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005163 + ... + 1005166.

Almost surely, 2^4020658 is an apocalyptic number.

4020658 is a deficient number, since it is larger than the sum of its proper divisors (2010332).

4020658 is a wasteful number, since it uses less digits than its factorization.

4020658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010331.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 4020658 is about 2005.1578491480. The cubic root of 4020658 is about 159.0129071969.

The spelling of 4020658 in words is "four million, twenty thousand, six hundred fifty-eight".