71400773 has 4 divisors (see below), whose sum is σ = 71799840. Its totient is φ = 71001708.

The previous prime is 71400767. The next prime is 71400811. The reversal of 71400773 is 37700417.

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: 37700417 = 167 ⋅225751.

It is a cyclic number.

It is not a de Polignac number, because 71400773 - 2⁴ = 71400757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71400743) 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, 199265 + ... + 199622.

It is an arithmetic number, because the mean of its divisors is an integer number (17949960).

Almost surely, 2^71400773 is an apocalyptic number.

It is an amenable number.

71400773 is a deficient number, since it is larger than the sum of its proper divisors (399067).

71400773 is a wasteful number, since it uses less digits than its factorization.

71400773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399066.

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 71400773 is about 8449.8978100330. The cubic root of 71400773 is about 414.8594346607.

The spelling of 71400773 in words is "seventy-one million, four hundred thousand, seven hundred seventy-three".