6999136 has 12 divisors (see below), whose sum is σ = 13779612. Its totient is φ = 3499552.

The previous prime is 6999131. The next prime is 6999143. The reversal of 6999136 is 6319996.

It is a junction number, because it is equal to n+sod(n) for n = 6999092 and 6999101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6999131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109330 + ... + 109393.

It is an arithmetic number, because the mean of its divisors is an integer number (1148301).

Almost surely, 2^6999136 is an apocalyptic number.

It is an amenable number.

6999136 is a deficient number, since it is larger than the sum of its proper divisors (6780476).

6999136 is a wasteful number, since it uses less digits than its factorization.

6999136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218733 (or 218725 counting only the distinct ones).

The product of its digits is 78732, while the sum is 43.

The square root of 6999136 is about 2645.5880253736. The cubic root of 6999136 is about 191.2852476080.

The spelling of 6999136 in words is "six million, nine hundred ninety-nine thousand, one hundred thirty-six".