61961738 has 4 divisors (see below), whose sum is σ = 92942610. Its totient is φ = 30980868.

The previous prime is 61961723. The next prime is 61961761. The reversal of 61961738 is 83716916.

61961738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 61418569 + 543169 = 7837^2 + 737^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61961695 and 61961704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15490433 + ... + 15490436.

Almost surely, 2^61961738 is an apocalyptic number.

61961738 is a deficient number, since it is larger than the sum of its proper divisors (30980872).

61961738 is a wasteful number, since it uses less digits than its factorization.

61961738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30980871.

The product of its digits is 54432, while the sum is 41.

The square root of 61961738 is about 7871.5778596162. The cubic root of 61961738 is about 395.7077265533.

The spelling of 61961738 in words is "sixty-one million, nine hundred sixty-one thousand, seven hundred thirty-eight".