1061621460 has 72 divisors (see below), whose sum is σ = 3259095840. Its totient is φ = 279684288.

The previous prime is 1061621441. The next prime is 1061621461. The reversal of 1061621460 is 641261601.

1061621460 is a `hidden beast` number, since 1 + 0 + 616 + 2 + 1 + 46 + 0 = 666.

It is a super-2 number, since 2×1061621460² = 2254080248665063200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061621461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20590 + ... + 50469.

It is an arithmetic number, because the mean of its divisors is an integer number (45265220).

Almost surely, 2^1061621460 is an apocalyptic number.

1061621460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061621460 is an abundant number, since it is smaller than the sum of its proper divisors (2197474380).

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

1061621460 is a wasteful number, since it uses less digits than its factorization.

1061621460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71157 (or 71152 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1061621460 is about 32582.5330507006. The cubic root of 1061621460 is about 1020.1324510814.

It can be divided in two parts, 1061 and 621460, that added together give a square (622521 = 789²).

The spelling of 1061621460 in words is "one billion, sixty-one million, six hundred twenty-one thousand, four hundred sixty".