621012601 has 32 divisors (see below), whose sum is σ = 734330880. Its totient is φ = 518918400.

The previous prime is 621012599. The next prime is 621012611. The reversal of 621012601 is 106210126.

621012601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 621012601 - 2¹ = 621012599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621012611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1876006 + ... + 1876336.

It is an arithmetic number, because the mean of its divisors is an integer number (22947840).

Almost surely, 2^621012601 is an apocalyptic number.

It is an amenable number.

621012601 is a deficient number, since it is larger than the sum of its proper divisors (113318279).

621012601 is a wasteful number, since it uses less digits than its factorization.

621012601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 621012601 is about 24920.1244178275. The cubic root of 621012601 is about 853.1658645393.

Adding to 621012601 its reverse (106210126), we get a palindrome (727222727).

The spelling of 621012601 in words is "six hundred twenty-one million, twelve thousand, six hundred one".