71620733 has 8 divisors (see below), whose sum is σ = 72324000. Its totient is φ = 70921008.

The previous prime is 71620699. The next prime is 71620751. The reversal of 71620733 is 33702617.

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 71620733 - 2⁶ = 71620669 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71620696 and 71620705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71620033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56258 + ... + 57516.

It is an arithmetic number, because the mean of its divisors is an integer number (9040500).

Almost surely, 2^71620733 is an apocalyptic number.

It is an amenable number.

71620733 is a deficient number, since it is larger than the sum of its proper divisors (703267).

71620733 is a wasteful number, since it uses less digits than its factorization.

71620733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 71620733 is about 8462.9033434159. The cubic root of 71620733 is about 415.2850086526.

The spelling of 71620733 in words is "seventy-one million, six hundred twenty thousand, seven hundred thirty-three".