63494709 has 8 divisors (see below), whose sum is σ = 84696672. Its totient is φ = 42311280.

The previous prime is 63494707. The next prime is 63494723. The reversal of 63494709 is 90749436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63494709 - 2¹ = 63494707 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63494707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9694 + ... + 14864.

It is an arithmetic number, because the mean of its divisors is an integer number (10587084).

Almost surely, 2^63494709 is an apocalyptic number.

It is an amenable number.

63494709 is a deficient number, since it is larger than the sum of its proper divisors (21201963).

63494709 is a wasteful number, since it uses less digits than its factorization.

63494709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9267.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 63494709 is about 7968.3567314723. The cubic root of 63494709 is about 398.9445278124.

The spelling of 63494709 in words is "sixty-three million, four hundred ninety-four thousand, seven hundred nine".