68191952 has 10 divisors (see below), whose sum is σ = 132121938. Its totient is φ = 34095968.

The previous prime is 68191951. The next prime is 68191993. The reversal of 68191952 is 25919186.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 44142736 + 24049216 = 6644^2 + 4904^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68191951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2130983 + ... + 2131014.

Almost surely, 2^68191952 is an apocalyptic number.

It is an amenable number.

68191952 is a deficient number, since it is larger than the sum of its proper divisors (63929986).

68191952 is a wasteful number, since it uses less digits than its factorization.

68191952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262005 (or 4261999 counting only the distinct ones).

The product of its digits is 38880, while the sum is 41.

The square root of 68191952 is about 8257.8418488126. The cubic root of 68191952 is about 408.5492091151.

The spelling of 68191952 in words is "sixty-eight million, one hundred ninety-one thousand, nine hundred fifty-two".