641606146 has 16 divisors (see below), whose sum is σ = 1019532960. Its totient is φ = 301780800.

The previous prime is 641606143. The next prime is 641606149.

641606146 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (641606143) and next prime (641606149).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (641606143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93625 + ... + 100243.

It is an arithmetic number, because the mean of its divisors is an integer number (63720810).

Almost surely, 2^641606146 is an apocalyptic number.

641606146 is a deficient number, since it is larger than the sum of its proper divisors (377926814).

641606146 is a wasteful number, since it uses less digits than its factorization.

641606146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9489.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 641606146 is about 25329.9456375256. The cubic root of 641606146 is about 862.4941772624.

The spelling of 641606146 in words is "six hundred forty-one million, six hundred six thousand, one hundred forty-six".