620466421 has 4 divisors (see below), whose sum is σ = 620903872. Its totient is φ = 620028972.

The previous prime is 620466409. The next prime is 620466443. The reversal of 620466421 is 124664026.

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 620466421 - 2¹³ = 620458229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620466401) 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 3 ways as a sum of consecutive naturals, for example, 216591 + ... + 219436.

It is an arithmetic number, because the mean of its divisors is an integer number (155225968).

Almost surely, 2^620466421 is an apocalyptic number.

It is an amenable number.

620466421 is a deficient number, since it is larger than the sum of its proper divisors (437451).

620466421 is a wasteful number, since it uses less digits than its factorization.

620466421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437450.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 620466421 is about 24909.1633942210. The cubic root of 620466421 is about 852.9156716510.

The spelling of 620466421 in words is "six hundred twenty million, four hundred sixty-six thousand, four hundred twenty-one".