61444377 has 12 divisors (see below), whose sum is σ = 90817584. Its totient is φ = 40010040.

The previous prime is 61444373. The next prime is 61444379. The reversal of 61444377 is 77344416.

It is a happy number.

61444377 is a `hidden beast` number, since 614 + 4 + 4 + 37 + 7 = 666.

It is not a de Polignac number, because 61444377 - 2² = 61444373 is a prime.

It is a super-2 number, since 2×61444377² = 7550822929836258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61444373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78999 + ... + 79772.

It is an arithmetic number, because the mean of its divisors is an integer number (7568132).

Almost surely, 2^61444377 is an apocalyptic number.

It is an amenable number.

61444377 is a deficient number, since it is larger than the sum of its proper divisors (29373207).

61444377 is a wasteful number, since it uses less digits than its factorization.

61444377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158820 (or 158817 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 61444377 is about 7838.6463754911. The cubic root of 61444377 is about 394.6033019918.

The spelling of 61444377 in words is "sixty-one million, four hundred forty-four thousand, three hundred seventy-seven".