63709497 has 16 divisors (see below), whose sum is σ = 95552960. Its totient is φ = 42471540.

The previous prime is 63709463. The next prime is 63709511. The reversal of 63709497 is 79490736.

63709497 is a `hidden beast` number, since 637 + 0 + 9 + 4 + 9 + 7 = 666.

It is not a de Polignac number, because 63709497 - 2¹⁰ = 63708473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63709417) 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, 12379 + ... + 16752.

It is an arithmetic number, because the mean of its divisors is an integer number (5972060).

Almost surely, 2^63709497 is an apocalyptic number.

It is an amenable number.

63709497 is a deficient number, since it is larger than the sum of its proper divisors (31843463).

63709497 is an frugal number, since it uses more digits than its factorization.

63709497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29152 (or 29134 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 63709497 is about 7981.8229120922. The cubic root of 63709497 is about 399.3938673888.

The spelling of 63709497 in words is "sixty-three million, seven hundred nine thousand, four hundred ninety-seven".