71849650 has 48 divisors (see below), whose sum is σ = 142765416. Its totient is φ = 26808320.

The previous prime is 71849647. The next prime is 71849653. The reversal of 71849650 is 5694817.

It is an interprime number because it is at equal distance from previous prime (71849647) and next prime (71849653).

It can be written as a sum of positive squares in 12 ways, for example, as 1306449 + 70543201 = 1143^2 + 8399^2 .

It is a super-3 number, since 3×71849650³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (71849653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116142 + ... + 116758.

Almost surely, 2^71849650 is an apocalyptic number.

71849650 is a deficient number, since it is larger than the sum of its proper divisors (70915766).

71849650 is a wasteful number, since it uses less digits than its factorization.

71849650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 71849650 is about 8476.4172856225. The cubic root of 71849650 is about 415.7269881813.

The spelling of 71849650 in words is "seventy-one million, eight hundred forty-nine thousand, six hundred fifty".