63499705 has 12 divisors (see below), whose sum is σ = 78923052. Its totient is φ = 49044800.

The previous prime is 63499699. The next prime is 63499717. The reversal of 63499705 is 50799436.

It can be written as a sum of positive squares in 6 ways, for example, as 4194304 + 59305401 = 2048^2 + 7701^2 .

It is not a de Polignac number, because 63499705 - 2³ = 63499697 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3346 + ... + 11755.

It is an arithmetic number, because the mean of its divisors is an integer number (6576921).

Almost surely, 2^63499705 is an apocalyptic number.

It is an amenable number.

63499705 is a deficient number, since it is larger than the sum of its proper divisors (15423347).

63499705 is a wasteful number, since it uses less digits than its factorization.

63499705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15164 (or 15135 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 63499705 is about 7968.6702152869. The cubic root of 63499705 is about 398.9549910181.

The spelling of 63499705 in words is "sixty-three million, four hundred ninety-nine thousand, seven hundred five".