1622864497 has 4 divisors (see below), whose sum is σ = 1633612096. Its totient is φ = 1612116900.

The previous prime is 1622864491. The next prime is 1622864513. The reversal of 1622864497 is 7944682261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7944682261 = 49741 ⋅159721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1622864497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1622864497.

It is not an unprimeable number, because it can be changed into a prime (1622864491) 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, 5373573 + ... + 5373874.

It is an arithmetic number, because the mean of its divisors is an integer number (408403024).

Almost surely, 2^1622864497 is an apocalyptic number.

It is an amenable number.

1622864497 is a deficient number, since it is larger than the sum of its proper divisors (10747599).

1622864497 is a wasteful number, since it uses less digits than its factorization.

1622864497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10747598.

The product of its digits is 1161216, while the sum is 49.

The square root of 1622864497 is about 40284.7923787625. The cubic root of 1622864497 is about 1175.1521147866.

The spelling of 1622864497 in words is "one billion, six hundred twenty-two million, eight hundred sixty-four thousand, four hundred ninety-seven".