71742464 has 22 divisors (see below), whose sum is σ = 143416914. Its totient is φ = 35870720.

The previous prime is 71742439. The next prime is 71742467. The reversal of 71742464 is 46424717.

It can be written as a sum of positive squares in only one way, i.e., 54169600 + 17572864 = 7360^2 + 4192^2 .

It is a super-2 number, since 2×71742464² = 10293962281582592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71742467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34007 + ... + 36054.

Almost surely, 2^71742464 is an apocalyptic number.

It is an amenable number.

71742464 is a deficient number, since it is larger than the sum of its proper divisors (71674450).

71742464 is an equidigital number, since it uses as much as digits as its factorization.

71742464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70081 (or 70063 counting only the distinct ones).

The product of its digits is 37632, while the sum is 35.

The square root of 71742464 is about 8470.0923253528. The cubic root of 71742464 is about 415.5201567876.

It can be divided in two parts, 7 and 1742464, that added together give a palindrome (1742471).

The spelling of 71742464 in words is "seventy-one million, seven hundred forty-two thousand, four hundred sixty-four".