1374704640 has 132 divisors (see below), whose sum is σ = 4763475444. Its totient is φ = 366575616.

The previous prime is 1374704629. The next prime is 1374704657. The reversal of 1374704640 is 464074731.

It is a happy number.

1374704640 is a `hidden beast` number, since 1 + 3 + 7 + 4 + 7 + 0 + 4 + 640 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 539725824 + 834978816 = 23232^2 + 28896^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1374704595 and 1374704604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31164 + ... + 60996.

Almost surely, 2^1374704640 is an apocalyptic number.

1374704640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1374704640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2381737722).

1374704640 is an abundant number, since it is smaller than the sum of its proper divisors (3388770804).

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

1374704640 is a wasteful number, since it uses less digits than its factorization.

1374704640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29864 (or 29843 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 1374704640 is about 37077.0095881531. The cubic root of 1374704640 is about 1111.9104183999.

The spelling of 1374704640 in words is "one billion, three hundred seventy-four million, seven hundred four thousand, six hundred forty".