63011491 has 8 divisors (see below), whose sum is σ = 63853664. Its totient is φ = 62173440.

The previous prime is 63011489. The next prime is 63011497. The reversal of 63011491 is 19411036.

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

It is a cyclic number.

It is not a de Polignac number, because 63011491 - 2¹ = 63011489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63011497) 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, 40066 + ... + 41608.

It is an arithmetic number, because the mean of its divisors is an integer number (7981708).

Almost surely, 2^63011491 is an apocalyptic number.

63011491 is a deficient number, since it is larger than the sum of its proper divisors (842173).

63011491 is a wasteful number, since it uses less digits than its factorization.

63011491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 63011491 is about 7937.9777651490. The cubic root of 63011491 is about 397.9299115657.

It can be divided in two parts, 630 and 11491, that added together give a palindrome (12121).

The spelling of 63011491 in words is "sixty-three million, eleven thousand, four hundred ninety-one".