61248645 has 12 divisors (see below), whose sum is σ = 106164396. Its totient is φ = 32665920.

The previous prime is 61248601. The next prime is 61248659. The reversal of 61248645 is 54684216.

61248645 is a `hidden beast` number, since 6 + 1 + 2 + 4 + 8 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12723489 + 48525156 = 3567^2 + 6966^2 .

It is not a de Polignac number, because 61248645 - 2¹³ = 61240453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 680496 + ... + 680585.

It is an arithmetic number, because the mean of its divisors is an integer number (8847033).

Almost surely, 2^61248645 is an apocalyptic number.

It is an amenable number.

61248645 is a deficient number, since it is larger than the sum of its proper divisors (44915751).

61248645 is a wasteful number, since it uses less digits than its factorization.

61248645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361092 (or 1361089 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 61248645 is about 7826.1513529959. The cubic root of 61248645 is about 394.1838513417.

The spelling of 61248645 in words is "sixty-one million, two hundred forty-eight thousand, six hundred forty-five".