68507535 has 64 divisors (see below), whose sum is σ = 122332032. Its totient is φ = 32587776.

The previous prime is 68507533. The next prime is 68507539. The reversal of 68507535 is 53570586.

It is not a de Polignac number, because 68507535 - 2¹ = 68507533 is a prime.

68507535 is a modest number, since divided by 7535 gives 6850 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 68507493 and 68507502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68507531) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 499987 + ... + 500123.

It is an arithmetic number, because the mean of its divisors is an integer number (1911438).

Almost surely, 2^68507535 is an apocalyptic number.

68507535 is a deficient number, since it is larger than the sum of its proper divisors (53824497).

68507535 is a wasteful number, since it uses less digits than its factorization.

68507535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 68507535 is about 8276.9278721033. The cubic root of 68507535 is about 409.1784759574.

The spelling of 68507535 in words is "sixty-eight million, five hundred seven thousand, five hundred thirty-five".