61498745 has 16 divisors (see below), whose sum is σ = 92009088. Its totient is φ = 38336640.

The previous prime is 61498727. The next prime is 61498769. The reversal of 61498745 is 54789416.

It is not a de Polignac number, because 61498745 - 2⁶ = 61498681 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61498696 and 61498705.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79484 + ... + 80253.

It is an arithmetic number, because the mean of its divisors is an integer number (5750568).

Almost surely, 2^61498745 is an apocalyptic number.

It is an amenable number.

61498745 is a deficient number, since it is larger than the sum of its proper divisors (30510343).

61498745 is a wasteful number, since it uses less digits than its factorization.

61498745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159760.

The product of its digits is 241920, while the sum is 44.

The square root of 61498745 is about 7842.1135543934. The cubic root of 61498745 is about 394.7196536625.

The spelling of 61498745 in words is "sixty-one million, four hundred ninety-eight thousand, seven hundred forty-five".