545661602 has 8 divisors (see below), whose sum is σ = 818713116. Its totient is φ = 272757232.

The previous prime is 545661539. The next prime is 545661643. The reversal of 545661602 is 206166545.

It can be written as a sum of positive squares in 2 ways, for example, as 430936081 + 114725521 = 20759^2 + 10711^2 .

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

It is a super-4 number, since 4×545661602⁴ (a number of 36 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26993 + ... + 42660.

Almost surely, 2^545661602 is an apocalyptic number.

545661602 is a deficient number, since it is larger than the sum of its proper divisors (273051514).

545661602 is a wasteful number, since it uses less digits than its factorization.

545661602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73572.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 545661602 is about 23359.4007200527. The cubic root of 545661602 is about 817.1613136275.

The spelling of 545661602 in words is "five hundred forty-five million, six hundred sixty-one thousand, six hundred two".