641297148 has 48 divisors (see below), whose sum is σ = 1534547616. Its totient is φ = 208373760.

The previous prime is 641297131. The next prime is 641297149. The reversal of 641297148 is 841792146.

It is a super-2 number, since 2×641297148² = 822524064065867808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641297149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78840 + ... + 86592.

It is an arithmetic number, because the mean of its divisors is an integer number (31969742).

Almost surely, 2^641297148 is an apocalyptic number.

It is an amenable number.

641297148 is an abundant number, since it is smaller than the sum of its proper divisors (893250468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641297148 is a wasteful number, since it uses less digits than its factorization.

641297148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7934 (or 7932 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 641297148 is about 25323.8454425863. The cubic root of 641297148 is about 862.3556957487.

The spelling of 641297148 in words is "six hundred forty-one million, two hundred ninety-seven thousand, one hundred forty-eight".