872020003 has 4 divisors (see below), whose sum is σ = 873569448. Its totient is φ = 870470560.

The previous prime is 872020001. The next prime is 872020013. The reversal of 872020003 is 300020278.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300020278 = 2 ⋅150010139.

It is a cyclic number.

It is not a de Polignac number, because 872020003 - 2¹ = 872020001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872020001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773878 + ... + 775003.

It is an arithmetic number, because the mean of its divisors is an integer number (218392362).

Almost surely, 2^872020003 is an apocalyptic number.

872020003 is a deficient number, since it is larger than the sum of its proper divisors (1549445).

872020003 is a wasteful number, since it uses less digits than its factorization.

872020003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549444.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 872020003 is about 29529.9848120516. The cubic root of 872020003 is about 955.3785413082.

The spelling of 872020003 in words is "eight hundred seventy-two million, twenty thousand, three".