61875015 has 16 divisors (see below), whose sum is σ = 99167328. Its totient is φ = 32944256.

The previous prime is 61875013. The next prime is 61875017. The reversal of 61875015 is 51057816.

It is an interprime number because it is at equal distance from previous prime (61875013) and next prime (61875017).

It is a cyclic number.

It is not a de Polignac number, because 61875015 - 2¹ = 61875013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61875013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6637 + ... + 12953.

It is an arithmetic number, because the mean of its divisors is an integer number (6197958).

Almost surely, 2^61875015 is an apocalyptic number.

61875015 is a deficient number, since it is larger than the sum of its proper divisors (37292313).

61875015 is a wasteful number, since it uses less digits than its factorization.

61875015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6978.

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 61875015 is about 7866.0673147387. The cubic root of 61875015 is about 395.5230266347.

The spelling of 61875015 in words is "sixty-one million, eight hundred seventy-five thousand, fifteen".