61486645 has 8 divisors (see below), whose sum is σ = 80491680. Its totient is φ = 44717520.

The previous prime is 61486631. The next prime is 61486657. The reversal of 61486645 is 54668416.

It is a happy number.

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

It is not a de Polignac number, because 61486645 - 2¹³ = 61478453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61486598 and 61486607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558915 + ... + 559024.

It is an arithmetic number, because the mean of its divisors is an integer number (10061460).

Almost surely, 2^61486645 is an apocalyptic number.

It is an amenable number.

61486645 is a deficient number, since it is larger than the sum of its proper divisors (19005035).

61486645 is a wasteful number, since it uses less digits than its factorization.

61486645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117955.

The product of its digits is 138240, while the sum is 40.

The square root of 61486645 is about 7841.3420407479. The cubic root of 61486645 is about 394.6937646730.

The spelling of 61486645 in words is "sixty-one million, four hundred eighty-six thousand, six hundred forty-five".