71970357 has 12 divisors (see below), whose sum is σ = 97351520. Its totient is φ = 47294520.

The previous prime is 71970337. The next prime is 71970359. The reversal of 71970357 is 75307917.

It is a happy number.

It is not a de Polignac number, because 71970357 - 2¹⁰ = 71969333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71970359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12744 + ... + 17502.

Almost surely, 2^71970357 is an apocalyptic number.

It is an amenable number.

71970357 is a deficient number, since it is larger than the sum of its proper divisors (25381163).

71970357 is an equidigital number, since it uses as much as digits as its factorization.

71970357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4904 (or 4833 counting only the distinct ones).

The product of its (nonzero) digits is 46305, while the sum is 39.

The square root of 71970357 is about 8483.5344638894. The cubic root of 71970357 is about 415.9596642505.

It can be divided in two parts, 71970 and 357, that added together give a palindrome (72327).

The spelling of 71970357 in words is "seventy-one million, nine hundred seventy thousand, three hundred fifty-seven".