63723897 has 6 divisors (see below), whose sum is σ = 92045642. Its totient is φ = 42482592.

The previous prime is 63723887. The next prime is 63723931. The reversal of 63723897 is 79832736.

It is a happy number.

63723897 is a `hidden beast` number, since 637 + 2 + 3 + 8 + 9 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 59351616 + 4372281 = 7704^2 + 2091^2 .

It is not a de Polignac number, because 63723897 - 2⁸ = 63723641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63723827) 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, 3540208 + ... + 3540225.

Almost surely, 2^63723897 is an apocalyptic number.

It is an amenable number.

63723897 is a deficient number, since it is larger than the sum of its proper divisors (28321745).

63723897 is a wasteful number, since it uses less digits than its factorization.

63723897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7080439 (or 7080436 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 63723897 is about 7982.7249107056. The cubic root of 63723897 is about 399.4239562489.

It can be divided in two parts, 63723 and 897, that added together give a triangular number (64620 = T₃₅₉).

The spelling of 63723897 in words is "sixty-three million, seven hundred twenty-three thousand, eight hundred ninety-seven".