71463745 has 4 divisors (see below), whose sum is σ = 85756500. Its totient is φ = 57170992.

The previous prime is 71463739. The next prime is 71463793. The reversal of 71463745 is 54736417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54736417 = 4457 ⋅12281.

It can be written as a sum of positive squares in 2 ways, for example, as 45576001 + 25887744 = 6751^2 + 5088^2 .

It is a cyclic number.

It is not a de Polignac number, because 71463745 - 2⁹ = 71463233 is a prime.

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, 7146370 + ... + 7146379.

It is an arithmetic number, because the mean of its divisors is an integer number (21439125).

Almost surely, 2^71463745 is an apocalyptic number.

It is an amenable number.

71463745 is a deficient number, since it is larger than the sum of its proper divisors (14292755).

71463745 is a wasteful number, since it uses less digits than its factorization.

71463745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14292754.

The product of its digits is 70560, while the sum is 37.

The square root of 71463745 is about 8453.6231877225. The cubic root of 71463745 is about 414.9813607538.

The spelling of 71463745 in words is "seventy-one million, four hundred sixty-three thousand, seven hundred forty-five".