61444634 has 4 divisors (see below), whose sum is σ = 92166954. Its totient is φ = 30722316.

The previous prime is 61444631. The next prime is 61444639. The reversal of 61444634 is 43644416.

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., 60450625 + 994009 = 7775^2 + 997^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61444634.

It is not an unprimeable number, because it can be changed into a prime (61444631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15361157 + ... + 15361160.

Almost surely, 2^61444634 is an apocalyptic number.

61444634 is a deficient number, since it is larger than the sum of its proper divisors (30722320).

61444634 is a wasteful number, since it uses less digits than its factorization.

61444634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30722319.

The product of its digits is 27648, while the sum is 32.

The square root of 61444634 is about 7838.6627686105. The cubic root of 61444634 is about 394.6038521528.

The spelling of 61444634 in words is "sixty-one million, four hundred forty-four thousand, six hundred thirty-four".