71497206 has 72 divisors (see below), whose sum is σ = 180383112. Its totient is φ = 20380800.

The previous prime is 71497201. The next prime is 71497207. The reversal of 71497206 is 60279417.

It is a happy number.

It is a super-2 number, since 2×71497206² = 10223700931612872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71497201) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 36061 + ... + 37991.

It is an arithmetic number, because the mean of its divisors is an integer number (2505321).

Almost surely, 2^71497206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71497206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90191556).

71497206 is an abundant number, since it is smaller than the sum of its proper divisors (108885906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71497206 is a wasteful number, since it uses less digits than its factorization.

71497206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978 (or 1964 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 71497206 is about 8455.6020483464. The cubic root of 71497206 is about 415.0461186469.

The spelling of 71497206 in words is "seventy-one million, four hundred ninety-seven thousand, two hundred six".