61364378 has 4 divisors (see below), whose sum is σ = 92046570. Its totient is φ = 30682188.

The previous prime is 61364371. The next prime is 61364399. The reversal of 61364378 is 87346316.

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., 45738169 + 15626209 = 6763^2 + 3953^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61364371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15341093 + ... + 15341096.

Almost surely, 2^61364378 is an apocalyptic number.

61364378 is a deficient number, since it is larger than the sum of its proper divisors (30682192).

61364378 is a wasteful number, since it uses less digits than its factorization.

61364378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30682191.

The product of its digits is 72576, while the sum is 38.

The square root of 61364378 is about 7833.5418553806. The cubic root of 61364378 is about 394.4319731618.

The spelling of 61364378 in words is "sixty-one million, three hundred sixty-four thousand, three hundred seventy-eight".