63378623 has 16 divisors (see below), whose sum is σ = 83178240. Its totient is φ = 46785600.

The previous prime is 63378617. The next prime is 63378629. The reversal of 63378623 is 32687336.

It is an interprime number because it is at equal distance from previous prime (63378617) and next prime (63378629).

It is not a de Polignac number, because 63378623 - 2⁶ = 63378559 is a prime.

It is a super-2 number, since 2×63378623² = 8033699706752258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63378629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20198 + ... + 23123.

It is an arithmetic number, because the mean of its divisors is an integer number (5198640).

Almost surely, 2^63378623 is an apocalyptic number.

63378623 is a deficient number, since it is larger than the sum of its proper divisors (19799617).

63378623 is a wasteful number, since it uses less digits than its factorization.

63378623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43358.

The product of its digits is 108864, while the sum is 38.

The square root of 63378623 is about 7961.0692121096. The cubic root of 63378623 is about 398.7012522831.

The spelling of 63378623 in words is "sixty-three million, three hundred seventy-eight thousand, six hundred twenty-three".