68540151 has 16 divisors (see below), whose sum is σ = 95800320. Its totient is φ = 43538880.

The previous prime is 68540119. The next prime is 68540179. The reversal of 68540151 is 15104586.

It is not a de Polignac number, because 68540151 - 2⁵ = 68540119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68540111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1191 + ... + 11768.

It is an arithmetic number, because the mean of its divisors is an integer number (5987520).

Almost surely, 2^68540151 is an apocalyptic number.

68540151 is a deficient number, since it is larger than the sum of its proper divisors (27260169).

68540151 is a wasteful number, since it uses less digits than its factorization.

68540151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13046.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 68540151 is about 8278.8979339040. The cubic root of 68540151 is about 409.2434014082.

The spelling of 68540151 in words is "sixty-eight million, five hundred forty thousand, one hundred fifty-one".