63870434 has 4 divisors (see below), whose sum is σ = 95805654. Its totient is φ = 31935216.

The previous prime is 63870431. The next prime is 63870439. The reversal of 63870434 is 43407836.

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

It can be written as a sum of positive squares in only one way, i.e., 55547209 + 8323225 = 7453^2 + 2885^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 63870394 and 63870403.

It is not an unprimeable number, because it can be changed into a prime (63870431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15967607 + ... + 15967610.

Almost surely, 2^63870434 is an apocalyptic number.

63870434 is a deficient number, since it is larger than the sum of its proper divisors (31935220).

63870434 is a wasteful number, since it uses less digits than its factorization.

63870434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31935219.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 63870434 is about 7991.8980223724. The cubic root of 63870434 is about 399.7298884738.

The spelling of 63870434 in words is "sixty-three million, eight hundred seventy thousand, four hundred thirty-four".