63742791 has 8 divisors (see below), whose sum is σ = 97131904. Its totient is φ = 36424440.

The previous prime is 63742769. The next prime is 63742799. The reversal of 63742791 is 19724736.

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

It is not a de Polignac number, because 63742791 - 2⁹ = 63742279 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 (63742799) 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, 1517665 + ... + 1517706.

It is an arithmetic number, because the mean of its divisors is an integer number (12141488).

Almost surely, 2^63742791 is an apocalyptic number.

63742791 is a deficient number, since it is larger than the sum of its proper divisors (33389113).

63742791 is a wasteful number, since it uses less digits than its factorization.

63742791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3035381.

The product of its digits is 63504, while the sum is 39.

The square root of 63742791 is about 7983.9082534809. The cubic root of 63742791 is about 399.4634284660.

The spelling of 63742791 in words is "sixty-three million, seven hundred forty-two thousand, seven hundred ninety-one".