71616070 has 64 divisors (see below), whose sum is σ = 142502976. Its totient is φ = 25804800.

The previous prime is 71616049. The next prime is 71616071. The reversal of 71616070 is 7061617.

71616070 = T₁₁₄₀ + T₁₁₄₁ + ... + T₁₂₄₀.

It is a super-2 number, since 2×71616070² = 10257722964489800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71616071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 709020 + ... + 709120.

It is an arithmetic number, because the mean of its divisors is an integer number (2226609).

Almost surely, 2^71616070 is an apocalyptic number.

71616070 is a deficient number, since it is larger than the sum of its proper divisors (70886906).

71616070 is a wasteful number, since it uses less digits than its factorization.

71616070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 71616070 is about 8462.6278424612. The cubic root of 71616070 is about 415.2759958247.

Adding to 71616070 its reverse (7061617), we get a palindrome (78677687).

It can be divided in two parts, 7161 and 6070, that added together give a palindrome (13231).

The spelling of 71616070 in words is "seventy-one million, six hundred sixteen thousand, seventy".