68801537 has 24 divisors (see below), whose sum is σ = 83096424. Its totient is φ = 56754432.

The previous prime is 68801531. The next prime is 68801569. The reversal of 68801537 is 73510886.

It can be written as a sum of positive squares in 4 ways, for example, as 14984641 + 53816896 = 3871^2 + 7336^2 .

It is not a de Polignac number, because 68801537 - 2¹⁴ = 68785153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68801537.

It is not an unprimeable number, because it can be changed into a prime (68801531) 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, 248243 + ... + 248519.

It is an arithmetic number, because the mean of its divisors is an integer number (3462351).

Almost surely, 2^68801537 is an apocalyptic number.

It is an amenable number.

68801537 is a deficient number, since it is larger than the sum of its proper divisors (14294887).

68801537 is a wasteful number, since it uses less digits than its factorization.

68801537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 68801537 is about 8294.6691917158. The cubic root of 68801537 is about 409.7629742424.

The spelling of 68801537 in words is "sixty-eight million, eight hundred one thousand, five hundred thirty-seven".