63420455 has 24 divisors (see below), whose sum is σ = 93743568. Its totient is φ = 40927488.

The previous prime is 63420433. The next prime is 63420517. The reversal of 63420455 is 55402436.

It is not a de Polignac number, because 63420455 - 2¹⁸ = 63158311 is a prime.

It is a super-2 number, since 2×63420455² = 8044308224814050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3449 + ... + 11778.

It is an arithmetic number, because the mean of its divisors is an integer number (3905982).

Almost surely, 2^63420455 is an apocalyptic number.

63420455 is a deficient number, since it is larger than the sum of its proper divisors (30323113).

63420455 is a wasteful number, since it uses less digits than its factorization.

63420455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15263 (or 15256 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 63420455 is about 7963.6960640145. The cubic root of 63420455 is about 398.7889516887.

The spelling of 63420455 in words is "sixty-three million, four hundred twenty thousand, four hundred fifty-five".