63401457 has 16 divisors (see below), whose sum is σ = 98969472. Its totient is φ = 35345280.

The previous prime is 63401447. The next prime is 63401473. The reversal of 63401457 is 75410436.

It is not a de Polignac number, because 63401457 - 2⁴ = 63401441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63401447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35958 + ... + 37679.

It is an arithmetic number, because the mean of its divisors is an integer number (6185592).

Almost surely, 2^63401457 is an apocalyptic number.

It is an amenable number.

63401457 is a deficient number, since it is larger than the sum of its proper divisors (35568015).

63401457 is a wasteful number, since it uses less digits than its factorization.

63401457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73688.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 63401457 is about 7962.5031868125. The cubic root of 63401457 is about 398.7491277910.

The spelling of 63401457 in words is "sixty-three million, four hundred one thousand, four hundred fifty-seven".