69987960 has 96 divisors (see below), whose sum is σ = 259964640. Its totient is φ = 15996672.

The previous prime is 69987949. The next prime is 69987971. The reversal of 69987960 is 6978996.

It is an interprime number because it is at equal distance from previous prime (69987949) and next prime (69987971).

It is a junction number, because it is equal to n+sod(n) for n = 69987897 and 69987906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11367 + ... + 16406.

It is an arithmetic number, because the mean of its divisors is an integer number (2707965).

Almost surely, 2^69987960 is an apocalyptic number.

69987960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

69987960 is an abundant number, since it is smaller than the sum of its proper divisors (189976680).

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

69987960 is a wasteful number, since it uses less digits than its factorization.

69987960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27797 (or 27790 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 69987960 is about 8365.8807067756. The cubic root of 69987960 is about 412.1048999236.

The spelling of 69987960 in words is "sixty-nine million, nine hundred eighty-seven thousand, nine hundred sixty".