68486940 has 36 divisors (see below), whose sum is σ = 207744264. Its totient is φ = 18263136.

The previous prime is 68486923. The next prime is 68486953. The reversal of 68486940 is 4968486.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190062 + ... + 190421.

It is an arithmetic number, because the mean of its divisors is an integer number (5770674).

Almost surely, 2^68486940 is an apocalyptic number.

68486940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68486940 is an abundant number, since it is smaller than the sum of its proper divisors (139257324).

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

68486940 is a wasteful number, since it uses less digits than its factorization.

68486940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380498 (or 380493 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 68486940 is about 8275.6836575597. The cubic root of 68486940 is about 409.1374689094.

The spelling of 68486940 in words is "sixty-eight million, four hundred eighty-six thousand, nine hundred forty".