506661770 has 16 divisors (see below), whose sum is σ = 913304808. Its totient is φ = 202372800.

The previous prime is 506661767. The next prime is 506661773. The reversal of 506661770 is 77166605.

It is an interprime number because it is at equal distance from previous prime (506661767) and next prime (506661773).

It can be written as a sum of positive squares in 4 ways, for example, as 506565049 + 96721 = 22507^2 + 311^2 .

It is a super-2 number, since 2×506661770² = 513412298359065800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (506661773) 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, 29129 + ... + 43148.

Almost surely, 2^506661770 is an apocalyptic number.

506661770 is a deficient number, since it is larger than the sum of its proper divisors (406643038).

506661770 is a wasteful number, since it uses less digits than its factorization.

506661770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72985.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 506661770 is about 22509.1485845200. The cubic root of 506661770 is about 797.2099527321.

The spelling of 506661770 in words is "five hundred six million, six hundred sixty-one thousand, seven hundred seventy".