63146749 has 4 divisors (see below), whose sum is σ = 63163936. Its totient is φ = 63129564.

The previous prime is 63146731. The next prime is 63146767. The reversal of 63146749 is 94764136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (63146731) and next prime (63146767).

It is a cyclic number.

It is not a de Polignac number, because 63146749 - 2⁷ = 63146621 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 (63146719) 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, 609 + ... + 11254.

It is an arithmetic number, because the mean of its divisors is an integer number (15790984).

Almost surely, 2^63146749 is an apocalyptic number.

It is an amenable number.

63146749 is a deficient number, since it is larger than the sum of its proper divisors (17187).

63146749 is a wasteful number, since it uses less digits than its factorization.

63146749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17186.

The product of its digits is 108864, while the sum is 40.

The square root of 63146749 is about 7946.4928742182. The cubic root of 63146749 is about 398.2144350041.

The spelling of 63146749 in words is "sixty-three million, one hundred forty-six thousand, seven hundred forty-nine".