68961340 has 48 divisors (see below), whose sum is σ = 169993152. Its totient is φ = 23003136.

The previous prime is 68961323. The next prime is 68961349. The reversal of 68961340 is 4316986.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 68961340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68961349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1477 + ... + 11836.

It is an arithmetic number, because the mean of its divisors is an integer number (3541524).

Almost surely, 2^68961340 is an apocalyptic number.

It is an amenable number.

68961340 is an abundant number, since it is smaller than the sum of its proper divisors (101031812).

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

68961340 is a wasteful number, since it uses less digits than its factorization.

68961340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13366 (or 13364 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 68961340 is about 8304.2964783298. The cubic root of 68961340 is about 410.0799764666.

The spelling of 68961340 in words is "sixty-eight million, nine hundred sixty-one thousand, three hundred forty".