6999072 has 24 divisors (see below), whose sum is σ = 18372816. Its totient is φ = 2332992.

The previous prime is 6999071. The next prime is 6999073. The reversal of 6999072 is 2709996.

It is an interprime number because it is at equal distance from previous prime (6999071) and next prime (6999073).

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×6999072² = 97974017722368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6999071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36358 + ... + 36549.

It is an arithmetic number, because the mean of its divisors is an integer number (765534).

Almost surely, 2^6999072 is an apocalyptic number.

It is an amenable number.

6999072 is an abundant number, since it is smaller than the sum of its proper divisors (11373744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6999072 is a wasteful number, since it uses less digits than its factorization.

6999072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72920 (or 72912 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 6999072 is about 2645.5759297363. The cubic root of 6999072 is about 191.2846645697.

The spelling of 6999072 in words is "six million, nine hundred ninety-nine thousand, seventy-two".