68051457 has 24 divisors (see below), whose sum is σ = 102930048. Its totient is φ = 43243200.

The previous prime is 68051449. The next prime is 68051491. The reversal of 68051457 is 75415086.

It is not a de Polignac number, because 68051457 - 2³ = 68051449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68051657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107532 + ... + 108162.

It is an arithmetic number, because the mean of its divisors is an integer number (4288752).

Almost surely, 2^68051457 is an apocalyptic number.

It is an amenable number.

68051457 is a deficient number, since it is larger than the sum of its proper divisors (34878591).

68051457 is a wasteful number, since it uses less digits than its factorization.

68051457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181 (or 1178 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 68051457 is about 8249.3307001235. The cubic root of 68051457 is about 408.2684399814.

The spelling of 68051457 in words is "sixty-eight million, fifty-one thousand, four hundred fifty-seven".