71620464 has 40 divisors (see below), whose sum is σ = 185876992. Its totient is φ = 23762880.

The previous prime is 71620463. The next prime is 71620489. The reversal of 71620464 is 46402617.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71620463) 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, 7359 + ... + 14049.

Almost surely, 2^71620464 is an apocalyptic number.

It is an amenable number.

71620464 is an abundant number, since it is smaller than the sum of its proper divisors (114256528).

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

71620464 is a wasteful number, since it uses less digits than its factorization.

71620464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6925 (or 6919 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 71620464 is about 8462.8874505100. The cubic root of 71620464 is about 415.2844887296.

The spelling of 71620464 in words is "seventy-one million, six hundred twenty thousand, four hundred sixty-four".