68641972 has 12 divisors (see below), whose sum is σ = 137284000. Its totient is φ = 29417976.

The previous prime is 68641931. The next prime is 68641997. The reversal of 68641972 is 27914686.

68641972 is an admirable number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1225722 + ... + 1225777.

Almost surely, 2^68641972 is an apocalyptic number.

It is an amenable number.

68641972 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68641972 is a wasteful number, since it uses less digits than its factorization.

68641972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451510 (or 2451508 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 68641972 is about 8285.0450813499. The cubic root of 68641972 is about 409.4459539970.

It can be divided in two parts, 6864 and 1972, that added together give a square (8836 = 94²).

The spelling of 68641972 in words is "sixty-eight million, six hundred forty-one thousand, nine hundred seventy-two".