620464669 has 8 divisors (see below), whose sum is σ = 686404800. Its totient is φ = 556113600.

The previous prime is 620464667. The next prime is 620464679. The reversal of 620464669 is 966464026.

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

It is a cyclic number.

It is not a de Polignac number, because 620464669 - 2¹ = 620464667 is a prime.

It is a super-2 number, since 2×620464669² = 769952810954559122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620464661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396444 + ... + 398005.

It is an arithmetic number, because the mean of its divisors is an integer number (85800600).

Almost surely, 2^620464669 is an apocalyptic number.

It is an amenable number.

620464669 is a deficient number, since it is larger than the sum of its proper divisors (65940131).

620464669 is a wasteful number, since it uses less digits than its factorization.

620464669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794531.

The product of its (nonzero) digits is 373248, while the sum is 43.

The square root of 620464669 is about 24909.1282264153. The cubic root of 620464669 is about 852.9148688626.

The spelling of 620464669 in words is "six hundred twenty million, four hundred sixty-four thousand, six hundred sixty-nine".