628967541 has 4 divisors (see below), whose sum is σ = 838623392. Its totient is φ = 419311692.

The previous prime is 628967519. The next prime is 628967561. The reversal of 628967541 is 145769826.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 628967541 - 2¹⁵ = 628934773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628967561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104827921 + ... + 104827926.

It is an arithmetic number, because the mean of its divisors is an integer number (209655848).

Almost surely, 2^628967541 is an apocalyptic number.

It is an amenable number.

628967541 is a deficient number, since it is larger than the sum of its proper divisors (209655851).

628967541 is a wasteful number, since it uses less digits than its factorization.

628967541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209655850.

The product of its digits is 725760, while the sum is 48.

The square root of 628967541 is about 25079.2252870777. The cubic root of 628967541 is about 856.7933317797.

The spelling of 628967541 in words is "six hundred twenty-eight million, nine hundred sixty-seven thousand, five hundred forty-one".