71703421 has 8 divisors (see below), whose sum is σ = 72261504. Its totient is φ = 71148000.

The previous prime is 71703409. The next prime is 71703449. The reversal of 71703421 is 12430717.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71703421 - 2⁷ = 71703293 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 (71703461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115905 + ... + 116521.

It is an arithmetic number, because the mean of its divisors is an integer number (9032688).

Almost surely, 2^71703421 is an apocalyptic number.

It is an amenable number.

71703421 is a deficient number, since it is larger than the sum of its proper divisors (558083).

71703421 is a wasteful number, since it uses less digits than its factorization.

71703421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 71703421 is about 8467.7872552397. The cubic root of 71703421 is about 415.4447663033. Note that the first 3 decimals are identical.

The spelling of 71703421 in words is "seventy-one million, seven hundred three thousand, four hundred twenty-one".