61339378 has 4 divisors (see below), whose sum is σ = 92009070. Its totient is φ = 30669688.

The previous prime is 61339363. The next prime is 61339381. The reversal of 61339378 is 87393316.

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., 59954049 + 1385329 = 7743^2 + 1177^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61339378.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15334843 + ... + 15334846.

Almost surely, 2^61339378 is an apocalyptic number.

61339378 is a deficient number, since it is larger than the sum of its proper divisors (30669692).

61339378 is a wasteful number, since it uses less digits than its factorization.

61339378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30669691.

The product of its digits is 81648, while the sum is 40.

The square root of 61339378 is about 7831.9459906207. The cubic root of 61339378 is about 394.3784016976.

The spelling of 61339378 in words is "sixty-one million, three hundred thirty-nine thousand, three hundred seventy-eight".