71401897 has 16 divisors (see below), whose sum is σ = 86520832. Its totient is φ = 57620160.

The previous prime is 71401879. The next prime is 71401901. The reversal of 71401897 is 79810417.

It is a cyclic number.

It is not a de Polignac number, because 71401897 - 2¹¹ = 71399849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

71401897 is a modest number, since divided by 1897 gives 714 as remainder.

It is not an unprimeable number, because it can be changed into a prime (71401807) 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, 3583 + ... + 12475.

It is an arithmetic number, because the mean of its divisors is an integer number (5407552).

Almost surely, 2^71401897 is an apocalyptic number.

It is an amenable number.

71401897 is a deficient number, since it is larger than the sum of its proper divisors (15118935).

71401897 is a wasteful number, since it uses less digits than its factorization.

71401897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8968.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 71401897 is about 8449.9643194513. The cubic root of 71401897 is about 414.8616115725.

The spelling of 71401897 in words is "seventy-one million, four hundred one thousand, eight hundred ninety-seven".