63679397 has 4 divisors (see below), whose sum is σ = 64047660. Its totient is φ = 63311136.

The previous prime is 63679379. The next prime is 63679409. The reversal of 63679397 is 79397636.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32330596 + 31348801 = 5686^2 + 5599^2 .

It is a cyclic number.

It is not a de Polignac number, because 63679397 - 2¹⁸ = 63417253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63679307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183872 + ... + 184217.

It is an arithmetic number, because the mean of its divisors is an integer number (16011915).

Almost surely, 2^63679397 is an apocalyptic number.

It is an amenable number.

63679397 is a deficient number, since it is larger than the sum of its proper divisors (368263).

63679397 is a wasteful number, since it uses less digits than its factorization.

63679397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368262.

The product of its digits is 1285956, while the sum is 50.

The square root of 63679397 is about 7979.9371551410. The cubic root of 63679397 is about 399.3309586665.

The spelling of 63679397 in words is "sixty-three million, six hundred seventy-nine thousand, three hundred ninety-seven".