69667989 has 16 divisors (see below), whose sum is σ = 102632832. Its totient is φ = 41811968.

The previous prime is 69667981. The next prime is 69667991. The reversal of 69667989 is 98976696.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 69667989 - 2³ = 69667981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69667981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28524 + ... + 30869.

It is an arithmetic number, because the mean of its divisors is an integer number (6414552).

Almost surely, 2^69667989 is an apocalyptic number.

69667989 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

69667989 is a deficient number, since it is larger than the sum of its proper divisors (32964843).

69667989 is a wasteful number, since it uses less digits than its factorization.

69667989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59436.

The product of its digits is 8817984, while the sum is 60.

The square root of 69667989 is about 8346.7352300166. The cubic root of 69667989 is about 411.4759199428.

The spelling of 69667989 in words is "sixty-nine million, six hundred sixty-seven thousand, nine hundred eighty-nine".