63977403 has 16 divisors (see below), whose sum is σ = 100125440. Its totient is φ = 35570016.

The previous prime is 63977401. The next prime is 63977411. The reversal of 63977403 is 30477936.

It is not a de Polignac number, because 63977403 - 2¹ = 63977401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63977401) 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, 40393 + ... + 41946.

It is an arithmetic number, because the mean of its divisors is an integer number (6257840).

Almost surely, 2^63977403 is an apocalyptic number.

63977403 is a deficient number, since it is larger than the sum of its proper divisors (36148037).

63977403 is a wasteful number, since it uses less digits than its factorization.

63977403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82386.

The product of its (nonzero) digits is 95256, while the sum is 39.

The square root of 63977403 is about 7998.5875628138. The cubic root of 63977403 is about 399.9529173750.

The spelling of 63977403 in words is "sixty-three million, nine hundred seventy-seven thousand, four hundred three".