68211774 has 16 divisors (see below), whose sum is σ = 151581840. Its totient is φ = 22737240.

The previous prime is 68211761. The next prime is 68211809. The reversal of 68211774 is 47711286.

It is a super-2 number, since 2×68211774² = 9305692224454152, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631537 + ... + 631644.

It is an arithmetic number, because the mean of its divisors is an integer number (9473865).

Almost surely, 2^68211774 is an apocalyptic number.

68211774 is an abundant number, since it is smaller than the sum of its proper divisors (83370066).

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

68211774 is a wasteful number, since it uses less digits than its factorization.

68211774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263192 (or 1263186 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 68211774 is about 8259.0419541252. The cubic root of 68211774 is about 408.5887909018.

The spelling of 68211774 in words is "sixty-eight million, two hundred eleven thousand, seven hundred seventy-four".