71743746 has 16 divisors (see below), whose sum is σ = 143649504. Its totient is φ = 23887584.

The previous prime is 71743741. The next prime is 71743769. The reversal of 71743746 is 64734717.

It is a super-2 number, since 2×71743746² = 10294330180225032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71743741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556 + ... + 11991.

It is an arithmetic number, because the mean of its divisors is an integer number (8978094).

Almost surely, 2^71743746 is an apocalyptic number.

71743746 is an abundant number, since it is smaller than the sum of its proper divisors (71905758).

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

71743746 is a wasteful number, since it uses less digits than its factorization.

71743746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13505.

The product of its digits is 98784, while the sum is 39.

The square root of 71743746 is about 8470.1680030564. The cubic root of 71743746 is about 415.5226318149.

The spelling of 71743746 in words is "seventy-one million, seven hundred forty-three thousand, seven hundred forty-six".