71940501 has 16 divisors (see below), whose sum is σ = 106974400. Its totient is φ = 47782224.

The previous prime is 71940497. The next prime is 71940523. The reversal of 71940501 is 10504917.

71940501 is a `hidden beast` number, since 71 + 94 + 0 + 501 = 666.

It is not a de Polignac number, because 71940501 - 2² = 71940497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71940541) 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 15 ways as a sum of consecutive naturals, for example, 2670 + ... + 12288.

It is an arithmetic number, because the mean of its divisors is an integer number (6685900).

Almost surely, 2^71940501 is an apocalyptic number.

It is an amenable number.

71940501 is a deficient number, since it is larger than the sum of its proper divisors (35033899).

71940501 is a wasteful number, since it uses less digits than its factorization.

71940501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9905 (or 9899 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 71940501 is about 8481.7746374211. The cubic root of 71940501 is about 415.9021377450.

The spelling of 71940501 in words is "seventy-one million, nine hundred forty thousand, five hundred one".