611081145 has 64 divisors (see below), whose sum is σ = 1130004480. Its totient is φ = 312984000.

The previous prime is 611081137. The next prime is 611081183. The reversal of 611081145 is 541180116.

611081145 is a `hidden beast` number, since 611 + 0 + 8 + 1 + 1 + 45 = 666.

It is not a de Polignac number, because 611081145 - 2³ = 611081137 is a prime.

It is a super-2 number, since 2×611081145² = 746840331549022050, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 631452 + ... + 632418.

It is an arithmetic number, because the mean of its divisors is an integer number (17656320).

Almost surely, 2^611081145 is an apocalyptic number.

It is an amenable number.

611081145 is a deficient number, since it is larger than the sum of its proper divisors (518923335).

611081145 is a wasteful number, since it uses less digits than its factorization.

611081145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163 (or 1157 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 611081145 is about 24720.0555217823. The cubic root of 611081145 is about 848.5933574361.

The spelling of 611081145 in words is "six hundred eleven million, eighty-one thousand, one hundred forty-five".