1002620673 has 14 divisors (see below), whose sum is σ = 1503244434. Its totient is φ = 668413296.

The previous prime is 1002620657. The next prime is 1002620687. The reversal of 1002620673 is 3760262001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 999634689 + 2985984 = 31617^2 + 1728^2 .

It is not a de Polignac number, because 1002620673 - 2⁴ = 1002620657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1002620653) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 686940 + ... + 688397.

Almost surely, 2^1002620673 is an apocalyptic number.

It is an amenable number.

1002620673 is a deficient number, since it is larger than the sum of its proper divisors (500623761).

1002620673 is an frugal number, since it uses more digits than its factorization.

1002620673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375355 (or 1375340 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1002620673 is about 31664.1859677460. The cubic root of 1002620673 is about 1000.8727956728.

Adding to 1002620673 its reverse (3760262001), we get a palindrome (4762882674).

The spelling of 1002620673 in words is "one billion, two million, six hundred twenty thousand, six hundred seventy-three".