69781948 has 12 divisors (see below), whose sum is σ = 124958680. Its totient is φ = 34079472.

The previous prime is 69781939. The next prime is 69781949. The reversal of 69781948 is 84918796.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 69781895 and 69781904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69781949) 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, 202683 + ... + 203026.

Almost surely, 2^69781948 is an apocalyptic number.

It is an amenable number.

69781948 is a deficient number, since it is larger than the sum of its proper divisors (55176732).

69781948 is a wasteful number, since it uses less digits than its factorization.

69781948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405756 (or 405754 counting only the distinct ones).

The product of its digits is 870912, while the sum is 52.

The square root of 69781948 is about 8353.5590020063. The cubic root of 69781948 is about 411.7001541562.

The spelling of 69781948 in words is "sixty-nine million, seven hundred eighty-one thousand, nine hundred forty-eight".