420625673 has 16 divisors (see below), whose sum is σ = 458363136. Its totient is φ = 383685120.

The previous prime is 420625669. The next prime is 420625687. The reversal of 420625673 is 376526024.

It is not a de Polignac number, because 420625673 - 2² = 420625669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420625603) 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, 624665 + ... + 625337.

It is an arithmetic number, because the mean of its divisors is an integer number (28647696).

Almost surely, 2^420625673 is an apocalyptic number.

It is an amenable number.

420625673 is a deficient number, since it is larger than the sum of its proper divisors (37737463).

420625673 is a wasteful number, since it uses less digits than its factorization.

420625673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 420625673 is about 20509.1607093026. The cubic root of 420625673 is about 749.2589260611.

It can be divided in two parts, 420625 and 673, that multiplied together give a square (283080625 = 16825²).

The spelling of 420625673 in words is "four hundred twenty million, six hundred twenty-five thousand, six hundred seventy-three".