611631054 has 128 divisors (see below), whose sum is σ = 1490227200. Its totient is φ = 185431680.

The previous prime is 611631047. The next prime is 611631061. The reversal of 611631054 is 450136116.

It is an interprime number because it is at equal distance from previous prime (611631047) and next prime (611631061).

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

It is a Curzon number.

It is a congruent number.

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, 2087332 + ... + 2087624.

It is an arithmetic number, because the mean of its divisors is an integer number (11642400).

Almost surely, 2^611631054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611631054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745113600).

611631054 is an abundant number, since it is smaller than the sum of its proper divisors (878596146).

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

611631054 is a wasteful number, since it uses less digits than its factorization.

611631054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 611631054 is about 24731.1757504572. The cubic root of 611631054 is about 848.8478294867.

The spelling of 611631054 in words is "six hundred eleven million, six hundred thirty-one thousand, fifty-four".