60780989 has 2 divisors, whose sum is σ = 60780990. Its totient is φ = 60780988.

The previous prime is 60780977. The next prime is 60780997. The reversal of 60780989 is 98908706.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40005625 + 20775364 = 6325^2 + 4558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60780989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60780919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30390494 + 30390495.

It is an arithmetic number, because the mean of its divisors is an integer number (30390495).

Almost surely, 2^60780989 is an apocalyptic number.

It is an amenable number.

60780989 is a deficient number, since it is larger than the sum of its proper divisors (1).

60780989 is an equidigital number, since it uses as much as digits as its factorization.

60780989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 60780989 is about 7796.2163258853. The cubic root of 60780989 is about 393.1780406949.

The spelling of 60780989 in words is "sixty million, seven hundred eighty thousand, nine hundred eighty-nine".