61311654 has 20 divisors (see below), whose sum is σ = 137383884. Its totient is φ = 20437164.

The previous prime is 61311637. The next prime is 61311659. The reversal of 61311654 is 45611316.

61311654 is a `hidden beast` number, since 6 + 1 + 3 + 1 + 1 + 654 = 666.

It is a super-3 number, since 3×61311654³ (a number of 24 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61311659) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 189072 + ... + 189395.

Almost surely, 2^61311654 is an apocalyptic number.

61311654 is an abundant number, since it is smaller than the sum of its proper divisors (76072230).

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

61311654 is a wasteful number, since it uses less digits than its factorization.

61311654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378481 (or 378472 counting only the distinct ones).

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

The square root of 61311654 is about 7830.1758600941. The cubic root of 61311654 is about 394.3189760625.

The spelling of 61311654 in words is "sixty-one million, three hundred eleven thousand, six hundred fifty-four".