541665698 has 18 divisors (see below), whose sum is σ = 945553563. Its totient is φ = 232043700.

The previous prime is 541665689. The next prime is 541665701. The reversal of 541665698 is 896566145.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 270832849 + 270832849 = 16457^2 + 16457^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=16457.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 229223 + ... + 231573.

Almost surely, 2^541665698 is an apocalyptic number.

541665698 is a deficient number, since it is larger than the sum of its proper divisors (403887865).

541665698 is an frugal number, since it uses more digits than its factorization.

541665698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4718 (or 2360 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 50.

The square root of 541665698 is about 23273.7125959740. The cubic root of 541665698 is about 815.1617218309.

Multiplying 541665698 by its sum of digits (50), we get a square (27083284900 = 164570²).

The spelling of 541665698 in words is "five hundred forty-one million, six hundred sixty-five thousand, six hundred ninety-eight".