701612021 has 4 divisors (see below), whose sum is σ = 765394944. Its totient is φ = 637829100.

The previous prime is 701612003. The next prime is 701612029. The reversal of 701612021 is 120216107.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 701612021 - 2¹⁰ = 701610997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 701611984 and 701612002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (701612029) 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, 31891445 + ... + 31891466.

It is an arithmetic number, because the mean of its divisors is an integer number (191348736).

Almost surely, 2^701612021 is an apocalyptic number.

It is an amenable number.

701612021 is a deficient number, since it is larger than the sum of its proper divisors (63782923).

701612021 is a wasteful number, since it uses less digits than its factorization.

701612021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63782922.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 701612021 is about 26487.9599252189. The cubic root of 701612021 is about 888.5850601129.

Adding to 701612021 its reverse (120216107), we get a palindrome (821828128).

The spelling of 701612021 in words is "seven hundred one million, six hundred twelve thousand, twenty-one".