701616021 has 8 divisors (see below), whose sum is σ = 984724320. Its totient is φ = 443125872.

The previous prime is 701616017. The next prime is 701616029. The reversal of 701616021 is 120616107.

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

It is not a de Polignac number, because 701616021 - 2² = 701616017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 701615982 and 701616000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (701616029) 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, 6154470 + ... + 6154583.

It is an arithmetic number, because the mean of its divisors is an integer number (123090540).

Almost surely, 2^701616021 is an apocalyptic number.

It is an amenable number.

701616021 is a deficient number, since it is larger than the sum of its proper divisors (283108299).

701616021 is a wasteful number, since it uses less digits than its factorization.

701616021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12309075.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 701616021 is about 26488.0354311149. The cubic root of 701616021 is about 888.5867487639.

The spelling of 701616021 in words is "seven hundred one million, six hundred sixteen thousand, twenty-one".