68177940 has 24 divisors (see below), whose sum is σ = 190898400. Its totient is φ = 18180768.

The previous prime is 68177903. The next prime is 68177951. The reversal of 68177940 is 4977186.

68177940 is nontrivially palindromic in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 68177892 and 68177901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568090 + ... + 568209.

It is an arithmetic number, because the mean of its divisors is an integer number (7954100).

Almost surely, 2^68177940 is an apocalyptic number.

68177940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68177940 is an abundant number, since it is smaller than the sum of its proper divisors (122720460).

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

68177940 is a wasteful number, since it uses less digits than its factorization.

68177940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136311 (or 1136309 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 68177940 is about 8256.9933995371. The cubic root of 68177940 is about 408.5212244655.

The spelling of 68177940 in words is "sixty-eight million, one hundred seventy-seven thousand, nine hundred forty".