68101487 has 4 divisors (see below), whose sum is σ = 68353056. Its totient is φ = 67849920.

The previous prime is 68101463. The next prime is 68101499. The reversal of 68101487 is 78410186.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68101487 - 2¹² = 68097391 is a prime.

It is a super-2 number, since 2×68101487² = 9275625063222338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68101447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125378 + ... + 125919.

It is an arithmetic number, because the mean of its divisors is an integer number (17088264).

Almost surely, 2^68101487 is an apocalyptic number.

68101487 is a deficient number, since it is larger than the sum of its proper divisors (251569).

68101487 is a wasteful number, since it uses less digits than its factorization.

68101487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251568.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 68101487 is about 8252.3625102149. The cubic root of 68101487 is about 408.3684655968.

The spelling of 68101487 in words is "sixty-eight million, one hundred one thousand, four hundred eighty-seven".