73478653 has 2 divisors, whose sum is σ = 73478654. Its totient is φ = 73478652.

The previous prime is 73478651. The next prime is 73478687. The reversal of 73478653 is 35687437.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72284004 + 1194649 = 8502^2 + 1093^2 .

It is a cyclic number.

It is not a de Polignac number, because 73478653 - 2¹ = 73478651 is a prime.

It is a super-2 number, since 2×73478653² = 10798224893388818, which contains 22 as substring.

Together with 73478651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73478651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36739326 + 36739327.

It is an arithmetic number, because the mean of its divisors is an integer number (36739327).

Almost surely, 2^73478653 is an apocalyptic number.

It is an amenable number.

73478653 is a deficient number, since it is larger than the sum of its proper divisors (1).

73478653 is an equidigital number, since it uses as much as digits as its factorization.

73478653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 43.

The square root of 73478653 is about 8571.9690270089. The cubic root of 73478653 is about 418.8453793875.

The spelling of 73478653 in words is "seventy-three million, four hundred seventy-eight thousand, six hundred fifty-three".