62721005 has 4 divisors (see below), whose sum is σ = 75265212. Its totient is φ = 50176800.

The previous prime is 62720971. The next prime is 62721013. The reversal of 62721005 is 50012726.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50012726 = 2 ⋅25006363.

It can be written as a sum of positive squares in 2 ways, for example, as 27520516 + 35200489 = 5246^2 + 5933^2 .

It is not a de Polignac number, because 62721005 - 2⁶ = 62720941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6272096 + ... + 6272105.

It is an arithmetic number, because the mean of its divisors is an integer number (18816303).

Almost surely, 2^62721005 is an apocalyptic number.

It is an amenable number.

62721005 is a deficient number, since it is larger than the sum of its proper divisors (12544207).

62721005 is a wasteful number, since it uses less digits than its factorization.

62721005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12544206.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 62721005 is about 7919.6593992419. The cubic root of 62721005 is about 397.3174774807.

The spelling of 62721005 in words is "sixty-two million, seven hundred twenty-one thousand, five".