1655087616 has 240 divisors, whose sum is σ = 5880498624. Its totient is φ = 436396032.

The previous prime is 1655087611. The next prime is 1655087617. The reversal of 1655087616 is 6167805561.

1655087616 is a `hidden beast` number, since 1 + 6 + 550 + 87 + 6 + 16 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655087611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 417355 + ... + 421301.

Almost surely, 2^1655087616 is an apocalyptic number.

1655087616 is a gapful number since it is divisible by the number (16) 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 1655087616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2940249312).

1655087616 is an abundant number, since it is smaller than the sum of its proper divisors (4225411008).

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

1655087616 is a wasteful number, since it uses less digits than its factorization.

1655087616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3991 (or 3972 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 1655087616 is about 40682.7680474178. The cubic root of 1655087616 is about 1182.8790218095.

The spelling of 1655087616 in words is "one billion, six hundred fifty-five million, eighty-seven thousand, six hundred sixteen".