7442400660 has 96 divisors (see below), whose sum is σ = 21221437440. Its totient is φ = 1948520448.

The previous prime is 7442400649. The next prime is 7442400677. The reversal of 7442400660 is 660042447.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 734106 + ... + 744174.

It is an arithmetic number, because the mean of its divisors is an integer number (221056640).

Almost surely, 2^7442400660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7442400660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10610718720).

7442400660 is an abundant number, since it is smaller than the sum of its proper divisors (13779036780).

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

7442400660 is a wasteful number, since it uses less digits than its factorization.

7442400660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10305 (or 10303 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 7442400660 is about 86269.3494817250. The cubic root of 7442400660 is about 1952.4099644637.

The spelling of 7442400660 in words is "seven billion, four hundred forty-two million, four hundred thousand, six hundred sixty".