60675781 has 2 divisors, whose sum is σ = 60675782. Its totient is φ = 60675780.

The previous prime is 60675779. The next prime is 60675799. The reversal of 60675781 is 18757606.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58828900 + 1846881 = 7670^2 + 1359^2 .

It is a cyclic number.

It is not a de Polignac number, because 60675781 - 2¹ = 60675779 is a prime.

It is a super-2 number, since 2×60675781² = 7363100799919922, which contains 22 as substring.

Together with 60675779, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60675701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30337890 + 30337891.

It is an arithmetic number, because the mean of its divisors is an integer number (30337891).

Almost surely, 2^60675781 is an apocalyptic number.

It is an amenable number.

60675781 is a deficient number, since it is larger than the sum of its proper divisors (1).

60675781 is an equidigital number, since it uses as much as digits as its factorization.

60675781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 60675781 is about 7789.4660279123. The cubic root of 60675781 is about 392.9510543407.

The spelling of 60675781 in words is "sixty million, six hundred seventy-five thousand, seven hundred eighty-one".