1040061620 has 24 divisors (see below), whose sum is σ = 2352139944. Its totient is φ = 384022656.

The previous prime is 1040061619. The next prime is 1040061643. The reversal of 1040061620 is 261600401.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2062096 + 1037999524 = 1436^2 + 32218^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1040061592 and 1040061601.

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, 1999859 + ... + 2000378.

It is an arithmetic number, because the mean of its divisors is an integer number (98005831).

Almost surely, 2^1040061620 is an apocalyptic number.

1040061620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040061620 is an abundant number, since it is smaller than the sum of its proper divisors (1312078324).

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

1040061620 is a wasteful number, since it uses less digits than its factorization.

1040061620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000259 (or 4000257 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1040061620 is about 32249.9863565863. The cubic root of 1040061620 is about 1013.1794133232.

The spelling of 1040061620 in words is "one billion, forty million, sixty-one thousand, six hundred twenty".