71654 has 8 divisors (see below), whose sum is σ = 117288. Its totient is φ = 32560.

The previous prime is 71647. The next prime is 71663. The reversal of 71654 is 45617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1607 + ... + 1650.

It is an arithmetic number, because the mean of its divisors is an integer number (14661).

2⁷¹⁶⁵⁴ is an apocalyptic number.

71654 is a deficient number, since it is larger than the sum of its proper divisors (45634).

71654 is a wasteful number, since it uses less digits than its factorization.

71654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270.

The product of its digits is 840, while the sum is 23.

The square root of 71654 is about 267.6826479247. The cubic root of 71654 is about 41.5349297057.

Subtracting from 71654 its sum of digits (23), we obtain a triangular number (71631 = T₃₇₈).

It can be divided in two parts, 7 and 1654, that added together give a palindrome (1661).

The spelling of 71654 in words is "seventy-one thousand, six hundred fifty-four".