7400071646 has 16 divisors (see below), whose sum is σ = 12114388080. Its totient is φ = 3362230080.

The previous prime is 7400071619. The next prime is 7400071691. The reversal of 7400071646 is 6461700047.

It is a happy number.

It is a super-2 number, since 2×7400071646² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 18461 + ... + 123048.

It is an arithmetic number, because the mean of its divisors is an integer number (757149255).

Almost surely, 2^7400071646 is an apocalyptic number.

7400071646 is a deficient number, since it is larger than the sum of its proper divisors (4714316434).

7400071646 is a wasteful number, since it uses less digits than its factorization.

7400071646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143899.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 7400071646 is about 86023.6691033346. The cubic root of 7400071646 is about 1948.7014493730.

The spelling of 7400071646 in words is "seven billion, four hundred million, seventy-one thousand, six hundred forty-six".