6969696969 has 32 divisors (see below), whose sum is σ = 9971232768. Its totient is φ = 4319568000.

The previous prime is 6969696961. The next prime is 6969696971. The reversal of 6969696969 is 9696969696.

It is not a de Polignac number, because 6969696969 - 2³ = 6969696961 is a prime.

It is a super-2 number, since 2×6969696969² = 97153351679375573922, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

6969696969 is a strobogrammatic number because it is the same when read upside-down.

6969696969 is an undulating number in base 10.

6969696969 is a modest number, since divided by 696969 gives 6969 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 6969696969.

It is not an unprimeable number, because it can be changed into a prime (6969696961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 762114 + ... + 771204.

It is an arithmetic number, because the mean of its divisors is an integer number (311601024).

Almost surely, 2^6969696969 is an apocalyptic number.

6969696969 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

6969696969 is a deficient number, since it is larger than the sum of its proper divisors (3001535799).

6969696969 is a wasteful number, since it uses less digits than its factorization.

6969696969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9429.

The product of its digits is 459165024, while the sum is 75.

The square root of 6969696969 is about 83484.7109894980. The cubic root of 6969696969 is about 1910.1668274372.

The spelling of 6969696969 in words is "six billion, nine hundred sixty-nine million, six hundred ninety-six thousand, nine hundred sixty-nine".