68387554 has 4 divisors (see below), whose sum is σ = 102581334. Its totient is φ = 34193776.

The previous prime is 68387531. The next prime is 68387563. The reversal of 68387554 is 45578386.

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

It can be written as a sum of positive squares in only one way, i.e., 37884025 + 30503529 = 6155^2 + 5523^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17096887 + ... + 17096890.

Almost surely, 2^68387554 is an apocalyptic number.

68387554 is a deficient number, since it is larger than the sum of its proper divisors (34193780).

68387554 is a wasteful number, since it uses less digits than its factorization.

68387554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34193779.

The product of its digits is 806400, while the sum is 46.

The square root of 68387554 is about 8269.6767772386. The cubic root of 68387554 is about 408.9394641427.

It can be divided in two parts, 683875 and 54, that added together give a square (683929 = 827²).

The spelling of 68387554 in words is "sixty-eight million, three hundred eighty-seven thousand, five hundred fifty-four".