100780487 has 2 divisors, whose sum is σ = 100780488. Its totient is φ = 100780486.

The previous prime is 100780451. The next prime is 100780499. The reversal of 100780487 is 784087001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100780487 - 2¹⁶ = 100714951 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 (100780417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50390243 + 50390244.

It is an arithmetic number, because the mean of its divisors is an integer number (50390244).

Almost surely, 2^100780487 is an apocalyptic number.

100780487 is a deficient number, since it is larger than the sum of its proper divisors (1).

100780487 is an equidigital number, since it uses as much as digits as its factorization.

100780487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 100780487 is about 10038.9485007146. The cubic root of 100780487 is about 465.3633218610.

The spelling of 100780487 in words is "one hundred million, seven hundred eighty thousand, four hundred eighty-seven".