69867642 has 24 divisors (see below), whose sum is σ = 151313184. Its totient is φ = 21497424.

The previous prime is 69867601. The next prime is 69867661. The reversal of 69867642 is 24676896.

It is a junction number, because it is equal to n+sod(n) for n = 69867591 and 69867600.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 33438 + ... + 35465.

It is an arithmetic number, because the mean of its divisors is an integer number (6304716).

Almost surely, 2^69867642 is an apocalyptic number.

69867642 is an abundant number, since it is smaller than the sum of its proper divisors (81445542).

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

69867642 is a wasteful number, since it uses less digits than its factorization.

69867642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68934 (or 68921 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 69867642 is about 8358.6866193200. The cubic root of 69867642 is about 411.8686112915.

It can be divided in two parts, 698676 and 42, that multiplied together give a palindrome (29344392).

The spelling of 69867642 in words is "sixty-nine million, eight hundred sixty-seven thousand, six hundred forty-two".