610401555 has 64 divisors (see below), whose sum is σ = 1126794240. Its totient is φ = 313286400.

The previous prime is 610401553. The next prime is 610401593. The reversal of 610401555 is 555104016.

It is a happy number.

610401555 is a `hidden beast` number, since 6 + 104 + 0 + 1 + 555 = 666.

610401555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 610401555 - 2¹ = 610401553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (610401553) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 411415 + ... + 412895.

It is an arithmetic number, because the mean of its divisors is an integer number (17606160).

Almost surely, 2^610401555 is an apocalyptic number.

610401555 is a deficient number, since it is larger than the sum of its proper divisors (516392685).

610401555 is a wasteful number, since it uses less digits than its factorization.

610401555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609 (or 1603 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 610401555 is about 24706.3059764102. The cubic root of 610401555 is about 848.2786641095.

The spelling of 610401555 in words is "six hundred ten million, four hundred one thousand, five hundred fifty-five".