71660370 has 16 divisors (see below), whose sum is σ = 171984960. Its totient is φ = 19109424.

The previous prime is 71660353. The next prime is 71660431. The reversal of 71660370 is 7306617.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2388679 = 71660370 / (7 + 1 + 6 + 6 + 0 + 3 + 7 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194310 + ... + 1194369.

It is an arithmetic number, because the mean of its divisors is an integer number (10749060).

Almost surely, 2^71660370 is an apocalyptic number.

71660370 is an abundant number, since it is smaller than the sum of its proper divisors (100324590).

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

71660370 is a wasteful number, since it uses less digits than its factorization.

71660370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388689.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 71660370 is about 8465.2448281193. The cubic root of 71660370 is about 415.3616047979.

Adding to 71660370 its reverse (7306617), we get a palindrome (78966987).

The spelling of 71660370 in words is "seventy-one million, six hundred sixty thousand, three hundred seventy".