63364691 has 6 divisors (see below), whose sum is σ = 68614020. Its totient is φ = 58490328.

The previous prime is 63364649. The next prime is 63364703. The reversal of 63364691 is 19646336.

It is not a de Polignac number, because 63364691 - 2¹⁰ = 63363667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63364621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 187301 + ... + 187638.

It is an arithmetic number, because the mean of its divisors is an integer number (11435670).

Almost surely, 2^63364691 is an apocalyptic number.

63364691 is a deficient number, since it is larger than the sum of its proper divisors (5249329).

63364691 is a wasteful number, since it uses less digits than its factorization.

63364691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374965 (or 374952 counting only the distinct ones).

The product of its digits is 69984, while the sum is 38.

The square root of 63364691 is about 7960.1941559236. The cubic root of 63364691 is about 398.6720357395.

The spelling of 63364691 in words is "sixty-three million, three hundred sixty-four thousand, six hundred ninety-one".