63396740 has 144 divisors (see below), whose sum is σ = 164094336. Its totient is φ = 20444160.

The previous prime is 63396733. The next prime is 63396779. The reversal of 63396740 is 4769336.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 63396694 and 63396703.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 946187 + ... + 946253.

It is an arithmetic number, because the mean of its divisors is an integer number (1139544).

Almost surely, 2^63396740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63396740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82047168).

63396740 is an abundant number, since it is smaller than the sum of its proper divisors (100697596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63396740 is a wasteful number, since it uses less digits than its factorization.

63396740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 63396740 is about 7962.2069804797. The cubic root of 63396740 is about 398.7392387108.

The spelling of 63396740 in words is "sixty-three million, three hundred ninety-six thousand, seven hundred forty".