6620707 has 4 divisors (see below), whose sum is σ = 6745680. Its totient is φ = 6495736.

The previous prime is 6620699. The next prime is 6620717. The reversal of 6620707 is 7070266.

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

It is a cyclic number.

It is not a de Polignac number, because 6620707 - 2³ = 6620699 is a prime.

It is a super-2 number, since 2×6620707² = 87667522359698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6620717) 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, 62407 + ... + 62512.

It is an arithmetic number, because the mean of its divisors is an integer number (1686420).

Almost surely, 2^6620707 is an apocalyptic number.

6620707 is a deficient number, since it is larger than the sum of its proper divisors (124973).

6620707 is a wasteful number, since it uses less digits than its factorization.

6620707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124972.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 6620707 is about 2573.0734540623. The cubic root of 6620707 is about 187.7737110591.

It can be divided in two parts, 662070 and 7, that multiplied together give a triangular number (4634490 = T₃₀₄₄).

The spelling of 6620707 in words is "six million, six hundred twenty thousand, seven hundred seven".