700550021 has 4 divisors (see below), whose sum is σ = 702063552. Its totient is φ = 699036492.

The previous prime is 700550017. The next prime is 700550051. The reversal of 700550021 is 120055007.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120055007 = 7759 ⋅15473.

It is a cyclic number.

It is not a de Polignac number, because 700550021 - 2² = 700550017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 700549975 and 700550002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (700550051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756071 + ... + 756996.

It is an arithmetic number, because the mean of its divisors is an integer number (175515888).

Almost surely, 2^700550021 is an apocalyptic number.

It is an amenable number.

700550021 is a deficient number, since it is larger than the sum of its proper divisors (1513531).

700550021 is a wasteful number, since it uses less digits than its factorization.

700550021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513530.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 700550021 is about 26467.9054894791. The cubic root of 700550021 is about 888.1364960248.

The spelling of 700550021 in words is "seven hundred million, five hundred fifty thousand, twenty-one".