68491750 has 16 divisors (see below), whose sum is σ = 128217024. Its totient is φ = 27396600.

The previous prime is 68491711. The next prime is 68491757. The reversal of 68491750 is 5719486.

It is a super-2 number, since 2×68491750² = 9382239636125000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68491757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136734 + ... + 137233.

It is an arithmetic number, because the mean of its divisors is an integer number (8013564).

Almost surely, 2^68491750 is an apocalyptic number.

68491750 is a deficient number, since it is larger than the sum of its proper divisors (59725274).

68491750 is a wasteful number, since it uses less digits than its factorization.

68491750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273984 (or 273974 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 68491750 is about 8275.9742628889. The cubic root of 68491750 is about 409.1470469164.

The spelling of 68491750 in words is "sixty-eight million, four hundred ninety-one thousand, seven hundred fifty".