61578703 has 4 divisors (see below), whose sum is σ = 61645360. Its totient is φ = 61512048.

The previous prime is 61578701. The next prime is 61578733. The reversal of 61578703 is 30787516.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61578703 - 2¹ = 61578701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61578701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31923 + ... + 33796.

It is an arithmetic number, because the mean of its divisors is an integer number (15411340).

Almost surely, 2^61578703 is an apocalyptic number.

61578703 is a deficient number, since it is larger than the sum of its proper divisors (66657).

61578703 is an equidigital number, since it uses as much as digits as its factorization.

61578703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66656.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 61578703 is about 7847.2098863227. The cubic root of 61578703 is about 394.8906453679.

The spelling of 61578703 in words is "sixty-one million, five hundred seventy-eight thousand, seven hundred three".