545732690 has 16 divisors (see below), whose sum is σ = 983218392. Its totient is φ = 218093184.

The previous prime is 545732683. The next prime is 545732699. The reversal of 545732690 is 96237545.

It can be written as a sum of positive squares in 4 ways, for example, as 472236361 + 73496329 = 21731^2 + 8573^2 .

It is a super-2 number, since 2×545732690² = 595648337869272200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (545732699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13259 + ... + 35598.

Almost surely, 2^545732690 is an apocalyptic number.

545732690 is a deficient number, since it is larger than the sum of its proper divisors (437485702).

545732690 is a wasteful number, since it uses less digits than its factorization.

545732690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49981.

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 545732690 is about 23360.9222848757. The cubic root of 545732690 is about 817.1967982824.

The spelling of 545732690 in words is "five hundred forty-five million, seven hundred thirty-two thousand, six hundred ninety".