62720321 has 4 divisors (see below), whose sum is σ = 62823252. Its totient is φ = 62617392.

The previous prime is 62720263. The next prime is 62720341. The reversal of 62720321 is 12302726.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21298225 + 41422096 = 4615^2 + 6436^2 .

It is a cyclic number.

It is not a de Polignac number, because 62720321 - 2¹⁰ = 62719297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (62720341) 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, 50546 + ... + 51771.

It is an arithmetic number, because the mean of its divisors is an integer number (15705813).

Almost surely, 2^62720321 is an apocalyptic number.

It is an amenable number.

62720321 is a deficient number, since it is larger than the sum of its proper divisors (102931).

62720321 is a wasteful number, since it uses less digits than its factorization.

62720321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102930.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 62720321 is about 7919.6162154488. The cubic root of 62720321 is about 397.3160331685.

The spelling of 62720321 in words is "sixty-two million, seven hundred twenty thousand, three hundred twenty-one".