63498391 has 4 divisors (see below), whose sum is σ = 69270984. Its totient is φ = 57725800.

The previous prime is 63498389. The next prime is 63498427. The reversal of 63498391 is 19389436.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 63498391 - 2¹ = 63498389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63498301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2886280 + ... + 2886301.

It is an arithmetic number, because the mean of its divisors is an integer number (17317746).

Almost surely, 2^63498391 is an apocalyptic number.

63498391 is a deficient number, since it is larger than the sum of its proper divisors (5772593).

63498391 is a wasteful number, since it uses less digits than its factorization.

63498391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772592.

The product of its digits is 139968, while the sum is 43.

The square root of 63498391 is about 7968.5877669760. The cubic root of 63498391 is about 398.9522391393.

The spelling of 63498391 in words is "sixty-three million, four hundred ninety-eight thousand, three hundred ninety-one".