71894901 has 16 divisors (see below), whose sum is σ = 103437824. Its totient is φ = 44155584.

The previous prime is 71894897. The next prime is 71894903. The reversal of 71894901 is 10949817.

It is a happy number.

It is not a de Polignac number, because 71894901 - 2² = 71894897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71894901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71894903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22155 + ... + 25191.

It is an arithmetic number, because the mean of its divisors is an integer number (6464864).

Almost surely, 2^71894901 is an apocalyptic number.

It is an amenable number.

71894901 is a deficient number, since it is larger than the sum of its proper divisors (31542923).

71894901 is a wasteful number, since it uses less digits than its factorization.

71894901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 71894901 is about 8479.0860946213. The cubic root of 71894901 is about 415.8142449925.

It can be divided in two parts, 7189 and 4901, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 71894901 in words is "seventy-one million, eight hundred ninety-four thousand, nine hundred one".