973649 has 4 divisors (see below), whose sum is σ = 996336. Its totient is φ = 950964.

The previous prime is 973631. The next prime is 973657. The reversal of 973649 is 946379.

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: 946379 = 7 ⋅135197.

It is a cyclic number.

It is not a de Polignac number, because 973649 - 2¹⁶ = 908113 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 973649.

It is not an unprimeable number, because it can be changed into a prime (973669) 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, 11279 + ... + 11364.

It is an arithmetic number, because the mean of its divisors is an integer number (249084).

2⁹⁷³⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

973649 is a deficient number, since it is larger than the sum of its proper divisors (22687).

973649 is a wasteful number, since it uses less digits than its factorization.

973649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22686.

The product of its digits is 40824, while the sum is 38.

The square root of 973649 is about 986.7365403186. The cubic root of 973649 is about 99.1138030826.

The spelling of 973649 in words is "nine hundred seventy-three thousand, six hundred forty-nine".