641054733 has 24 divisors (see below), whose sum is σ = 950871264. Its totient is φ = 383819040.

The previous prime is 641054723. The next prime is 641054747. The reversal of 641054733 is 337450146.

It is not a de Polignac number, because 641054733 - 2²¹ = 638957581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 641054694 and 641054703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641054723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19491 + ... + 40767.

It is an arithmetic number, because the mean of its divisors is an integer number (39619636).

Almost surely, 2^641054733 is an apocalyptic number.

It is an amenable number.

641054733 is a deficient number, since it is larger than the sum of its proper divisors (309816531).

641054733 is a wasteful number, since it uses less digits than its factorization.

641054733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21385 (or 21374 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 641054733 is about 25319.0586910335. The cubic root of 641054733 is about 862.2470231400.

The spelling of 641054733 in words is "six hundred forty-one million, fifty-four thousand, seven hundred thirty-three".