641461548 has 144 divisors (see below), whose sum is σ = 1936241664. Its totient is φ = 163658880.

The previous prime is 641461477. The next prime is 641461553. The reversal of 641461548 is 845164146.

It is a super-2 number, since 2×641461548² = 822945835125112608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 235611 + ... + 238317.

Almost surely, 2^641461548 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641461548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (968120832).

641461548 is an abundant number, since it is smaller than the sum of its proper divisors (1294780116).

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

641461548 is a wasteful number, since it uses less digits than its factorization.

641461548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772 (or 2763 counting only the distinct ones).

The product of its digits is 92160, while the sum is 39.

The square root of 641461548 is about 25327.0911871063. The cubic root of 641461548 is about 862.4293793050.

The spelling of 641461548 in words is "six hundred forty-one million, four hundred sixty-one thousand, five hundred forty-eight".