61813742 has 16 divisors (see below), whose sum is σ = 98813952. Its totient is φ = 28933080.

The previous prime is 61813729. The next prime is 61813753. The reversal of 61813742 is 24731816.

It is a junction number, because it is equal to n+sod(n) for n = 61813699 and 61813708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12134 + ... + 16457.

It is an arithmetic number, because the mean of its divisors is an integer number (6175872).

Almost surely, 2^61813742 is an apocalyptic number.

61813742 is a deficient number, since it is larger than the sum of its proper divisors (37000210).

61813742 is a wasteful number, since it uses less digits than its factorization.

61813742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28663.

The product of its digits is 8064, while the sum is 32.

The square root of 61813742 is about 7862.1715829661. The cubic root of 61813742 is about 395.3924252576.

The spelling of 61813742 in words is "sixty-one million, eight hundred thirteen thousand, seven hundred forty-two".