420863487 has 8 divisors (see below), whose sum is σ = 612165120. Its totient is φ = 255068760.

The previous prime is 420863477. The next prime is 420863519. The reversal of 420863487 is 784368024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420863487 - 2⁶ = 420863423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420863447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6376687 + ... + 6376752.

It is an arithmetic number, because the mean of its divisors is an integer number (76520640).

Almost surely, 2^420863487 is an apocalyptic number.

420863487 is a deficient number, since it is larger than the sum of its proper divisors (191301633).

420863487 is a wasteful number, since it uses less digits than its factorization.

420863487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12753453.

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 420863487 is about 20514.9576407069. The cubic root of 420863487 is about 749.4001051851.

The spelling of 420863487 in words is "four hundred twenty million, eight hundred sixty-three thousand, four hundred eighty-seven".