6685534442 has 4 divisors (see below), whose sum is σ = 10028301666. Its totient is φ = 3342767220.

The previous prime is 6685534441. The next prime is 6685534469. The reversal of 6685534442 is 2444355866.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5560535761 + 1124998681 = 74569^2 + 33541^2 .

It is not an unprimeable number, because it can be changed into a prime (6685534441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1671383609 + ... + 1671383612.

Almost surely, 2^6685534442 is an apocalyptic number.

6685534442 is a deficient number, since it is larger than the sum of its proper divisors (3342767224).

6685534442 is a wasteful number, since it uses less digits than its factorization.

6685534442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342767223.

The product of its digits is 2764800, while the sum is 47.

The square root of 6685534442 is about 81765.1175135216. The cubic root of 6685534442 is about 1883.8459110172.

The spelling of 6685534442 in words is "six billion, six hundred eighty-five million, five hundred thirty-four thousand, four hundred forty-two".