63491007 has 8 divisors (see below), whose sum is σ = 87385600. Its totient is φ = 40961880.

The previous prime is 63491003. The next prime is 63491011. The reversal of 63491007 is 70019436.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (63491003) and next prime (63491011).

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

It is not a de Polignac number, because 63491007 - 2² = 63491003 is a prime.

It is a super-2 number, since 2×63491007² = 8062215939748098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63491003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341257 + ... + 341442.

It is an arithmetic number, because the mean of its divisors is an integer number (10923200).

Almost surely, 2^63491007 is an apocalyptic number.

63491007 is a deficient number, since it is larger than the sum of its proper divisors (23894593).

63491007 is a wasteful number, since it uses less digits than its factorization.

63491007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682733.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 63491007 is about 7968.1244342693. The cubic root of 63491007 is about 398.9367742984.

The spelling of 63491007 in words is "sixty-three million, four hundred ninety-one thousand, seven".