71502066 has 24 divisors (see below), whose sum is σ = 156665340. Its totient is φ = 23565696.

The previous prime is 71502037. The next prime is 71502071. The reversal of 71502066 is 66020517.

It can be written as a sum of positive squares in 2 ways, for example, as 71318025 + 184041 = 8445^2 + 429^2 .

It is a super-2 number, since 2×71502066² = 10225090884536712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20715 + ... + 23918.

Almost surely, 2^71502066 is an apocalyptic number.

71502066 is an abundant number, since it is smaller than the sum of its proper divisors (85163274).

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

71502066 is a wasteful number, since it uses less digits than its factorization.

71502066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44730 (or 44727 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 71502066 is about 8455.8894269024. The cubic root of 71502066 is about 415.0555226434.

It can be divided in two parts, 7150 and 2066, that added together give a square (9216 = 96²).

The spelling of 71502066 in words is "seventy-one million, five hundred two thousand, sixty-six".