61276378 has 4 divisors (see below), whose sum is σ = 91914570. Its totient is φ = 30638188.

The previous prime is 61276339. The next prime is 61276433. The reversal of 61276378 is 87367216.

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., 57805609 + 3470769 = 7603^2 + 1863^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 61276378.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15319093 + ... + 15319096.

Almost surely, 2^61276378 is an apocalyptic number.

61276378 is a deficient number, since it is larger than the sum of its proper divisors (30638192).

61276378 is a wasteful number, since it uses less digits than its factorization.

61276378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30638191.

The product of its digits is 84672, while the sum is 40.

The square root of 61276378 is about 7827.9229684508. The cubic root of 61276378 is about 394.2433370179.

The spelling of 61276378 in words is "sixty-one million, two hundred seventy-six thousand, three hundred seventy-eight".