1000606621 has 16 divisors (see below), whose sum is σ = 1227882240. Its totient is φ = 795836160.

The previous prime is 1000606591. The next prime is 1000606637. The reversal of 1000606621 is 1266060001.

It is not a de Polignac number, because 1000606621 - 2⁵ = 1000606589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000606592 and 1000606601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000606661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50766 + ... + 67663.

It is an arithmetic number, because the mean of its divisors is an integer number (76742640).

Almost surely, 2^1000606621 is an apocalyptic number.

It is an amenable number.

1000606621 is a deficient number, since it is larger than the sum of its proper divisors (227275619).

1000606621 is a wasteful number, since it uses less digits than its factorization.

1000606621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118524.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1000606621 is about 31632.3666677029. The cubic root of 1000606621 is about 1000.2021661261.

Adding to 1000606621 its reverse (1266060001), we get a palindrome (2266666622).

The spelling of 1000606621 in words is "one billion, six hundred six thousand, six hundred twenty-one".