61774481 has 8 divisors (see below), whose sum is σ = 68252544. Its totient is φ = 55612480.

The previous prime is 61774457. The next prime is 61774483. The reversal of 61774481 is 18447716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61774481 - 2¹⁰ = 61773457 is a prime.

It is a super-2 number, since 2×61774481² = 7632173005638722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61774483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78605 + ... + 79386.

It is an arithmetic number, because the mean of its divisors is an integer number (8531568).

Almost surely, 2^61774481 is an apocalyptic number.

It is an amenable number.

61774481 is a deficient number, since it is larger than the sum of its proper divisors (6478063).

61774481 is a wasteful number, since it uses less digits than its factorization.

61774481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158031.

The product of its digits is 37632, while the sum is 38.

The square root of 61774481 is about 7859.6743571219. The cubic root of 61774481 is about 395.3086963582.

The spelling of 61774481 in words is "sixty-one million, seven hundred seventy-four thousand, four hundred eighty-one".