71621363 has 4 divisors (see below), whose sum is σ = 78132408. Its totient is φ = 65110320.

The previous prime is 71621299. The next prime is 71621399. The reversal of 71621363 is 36312617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36312617 = 11 ⋅3301147.

It is not a de Polignac number, because 71621363 - 2⁶ = 71621299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71621863) 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, 3255506 + ... + 3255527.

It is an arithmetic number, because the mean of its divisors is an integer number (19533102).

Almost surely, 2^71621363 is an apocalyptic number.

71621363 is a deficient number, since it is larger than the sum of its proper divisors (6511045).

71621363 is a wasteful number, since it uses less digits than its factorization.

71621363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6511044.

The product of its digits is 4536, while the sum is 29.

The square root of 71621363 is about 8462.9405646028. The cubic root of 71621363 is about 415.2862263111.

The spelling of 71621363 in words is "seventy-one million, six hundred twenty-one thousand, three hundred sixty-three".