63138770 has 16 divisors (see below), whose sum is σ = 116422488. Its totient is φ = 24639360.

The previous prime is 63138763. The next prime is 63138787. The reversal of 63138770 is 7783136.

It can be written as a sum of positive squares in 4 ways, for example, as 43309561 + 19829209 = 6581^2 + 4453^2 .

It is a super-2 number, since 2×63138770² = 7973008554225800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 63138770.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76589 + ... + 77408.

Almost surely, 2^63138770 is an apocalyptic number.

63138770 is a deficient number, since it is larger than the sum of its proper divisors (53283718).

63138770 is a wasteful number, since it uses less digits than its factorization.

63138770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154045.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 63138770 is about 7945.9908129824. The cubic root of 63138770 is about 398.1976619748.

The spelling of 63138770 in words is "sixty-three million, one hundred thirty-eight thousand, seven hundred seventy".