73406401 has 2 divisors, whose sum is σ = 73406402. Its totient is φ = 73406400.

The previous prime is 73406383. The next prime is 73406407. The reversal of 73406401 is 10460437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73017025 + 389376 = 8545^2 + 624^2 .

It is a cyclic number.

It is not a de Polignac number, because 73406401 - 2⁵ = 73406369 is a prime.

It is not a weakly prime, because it can be changed into another prime (73406407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36703200 + 36703201.

It is an arithmetic number, because the mean of its divisors is an integer number (36703201).

Almost surely, 2^73406401 is an apocalyptic number.

It is an amenable number.

73406401 is a deficient number, since it is larger than the sum of its proper divisors (1).

73406401 is an equidigital number, since it uses as much as digits as its factorization.

73406401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 73406401 is about 8567.7535562130. The cubic root of 73406401 is about 418.7080499745.

Adding to 73406401 its reverse (10460437), we get a palindrome (83866838).

The spelling of 73406401 in words is "seventy-three million, four hundred six thousand, four hundred one".