61444692 has 18 divisors (see below), whose sum is σ = 155318618. Its totient is φ = 20481552.

The previous prime is 61444687. The next prime is 61444693. The reversal of 61444692 is 29644416.

It can be written as a sum of positive squares in only one way, i.e., 54819216 + 6625476 = 7404^2 + 2574^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1706797 = 61444692 / (6 + 1 + 4 + 4 + 4 + 6 + 9 + 2).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61444693) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 853363 + ... + 853434.

Almost surely, 2^61444692 is an apocalyptic number.

It is an amenable number.

61444692 is an abundant number, since it is smaller than the sum of its proper divisors (93873926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61444692 is a wasteful number, since it uses less digits than its factorization.

61444692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706807 (or 1706802 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 61444692 is about 7838.6664682202. Note that the first 3 decimals coincide. The cubic root of 61444692 is about 394.6039763135.

The spelling of 61444692 in words is "sixty-one million, four hundred forty-four thousand, six hundred ninety-two".