87654901 has 2 divisors, whose sum is σ = 87654902. Its totient is φ = 87654900.

The previous prime is 87654899. The next prime is 87654979. The reversal of 87654901 is 10945678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86974276 + 680625 = 9326^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 87654901 - 2¹ = 87654899 is a prime.

Together with 87654899, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87654001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43827450 + 43827451.

It is an arithmetic number, because the mean of its divisors is an integer number (43827451).

Almost surely, 2^87654901 is an apocalyptic number.

It is an amenable number.

87654901 is a deficient number, since it is larger than the sum of its proper divisors (1).

87654901 is an equidigital number, since it uses as much as digits as its factorization.

87654901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 87654901 is about 9362.4196124720. The cubic root of 87654901 is about 444.2138220845.

The spelling of 87654901 in words is "eighty-seven million, six hundred fifty-four thousand, nine hundred one".