68505453 has 16 divisors (see below), whose sum is σ = 104990400. Its totient is φ = 44094960.

The previous prime is 68505433. The next prime is 68505467. The reversal of 68505453 is 35450586.

68505453 is a `hidden beast` number, since 68 + 50 + 545 + 3 = 666.

It is not a de Polignac number, because 68505453 - 2⁵ = 68505421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68505433) 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, 42963 + ... + 44528.

It is an arithmetic number, because the mean of its divisors is an integer number (6561900).

Almost surely, 2^68505453 is an apocalyptic number.

It is an amenable number.

68505453 is a deficient number, since it is larger than the sum of its proper divisors (36484947).

68505453 is a wasteful number, since it uses less digits than its factorization.

68505453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87529 (or 87523 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 68505453 is about 8276.8020998451. The cubic root of 68505453 is about 409.1743308259.

It can be divided in two parts, 68 and 505453, that added together give a square (505521 = 711²).

The spelling of 68505453 in words is "sixty-eight million, five hundred five thousand, four hundred fifty-three".