61418740 has 24 divisors (see below), whose sum is σ = 134588160. Its totient is φ = 23499168.

The previous prime is 61418737. The next prime is 61418741. The reversal of 61418740 is 4781416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61418741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66300 + ... + 67219.

It is an arithmetic number, because the mean of its divisors is an integer number (5607840).

Almost surely, 2^61418740 is an apocalyptic number.

It is an amenable number.

61418740 is an abundant number, since it is smaller than the sum of its proper divisors (73169420).

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

61418740 is a wasteful number, since it uses less digits than its factorization.

61418740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133551 (or 133549 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 61418740 is about 7837.0109097793. The cubic root of 61418740 is about 394.5484130409.

The spelling of 61418740 in words is "sixty-one million, four hundred eighteen thousand, seven hundred forty".