549687641 has 8 divisors (see below), whose sum is σ = 553453824. Its totient is φ = 545933520.

The previous prime is 549687637. The next prime is 549687643. The reversal of 549687641 is 146786945.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 549687641 - 2² = 549687637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 549687641.

It is not an unprimeable number, because it can be changed into a prime (549687643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100130 + ... + 105476.

It is an arithmetic number, because the mean of its divisors is an integer number (69181728).

Almost surely, 2^549687641 is an apocalyptic number.

It is an amenable number.

549687641 is a deficient number, since it is larger than the sum of its proper divisors (3766183).

549687641 is a wasteful number, since it uses less digits than its factorization.

549687641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6031.

The product of its digits is 1451520, while the sum is 50.

The square root of 549687641 is about 23445.4183370653. The cubic root of 549687641 is about 819.1661367604.

The spelling of 549687641 in words is "five hundred forty-nine million, six hundred eighty-seven thousand, six hundred forty-one".