6820140148 has 6 divisors (see below), whose sum is σ = 11935245266. Its totient is φ = 3410070072.

The previous prime is 6820140127. The next prime is 6820140161. The reversal of 6820140148 is 8410410286.

It can be written as a sum of positive squares in only one way, i.e., 4975609444 + 1844530704 = 70538^2 + 42948^2 .

It is a super-2 number, since 2×6820140148² = 93028623276722923808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 852517515 + ... + 852517522.

Almost surely, 2^6820140148 is an apocalyptic number.

It is an amenable number.

6820140148 is a deficient number, since it is larger than the sum of its proper divisors (5115105118).

6820140148 is a wasteful number, since it uses less digits than its factorization.

6820140148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705035041 (or 1705035039 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 6820140148 is about 82584.1398090457. The cubic root of 6820140148 is about 1896.4050349910.

The spelling of 6820140148 in words is "six billion, eight hundred twenty million, one hundred forty thousand, one hundred forty-eight".