61644034 has 4 divisors (see below), whose sum is σ = 92466054. Its totient is φ = 30822016.

The previous prime is 61644029. The next prime is 61644041. The reversal of 61644034 is 43044616.

It is a happy number.

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., 59675625 + 1968409 = 7725^2 + 1403^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61643993 and 61644011.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15411007 + ... + 15411010.

Almost surely, 2^61644034 is an apocalyptic number.

61644034 is a deficient number, since it is larger than the sum of its proper divisors (30822020).

61644034 is a wasteful number, since it uses less digits than its factorization.

61644034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30822019.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 61644034 is about 7851.3714725518. The cubic root of 61644034 is about 395.0302471096.

The spelling of 61644034 in words is "sixty-one million, six hundred forty-four thousand, thirty-four".