61730315 has 16 divisors (see below), whose sum is σ = 79252992. Its totient is φ = 45993984.

The previous prime is 61730309. The next prime is 61730323. The reversal of 61730315 is 51303716.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61730315 is a prime.

It is a Duffinian number.

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, 4502 + ... + 11988.

It is an arithmetic number, because the mean of its divisors is an integer number (4953312).

Almost surely, 2^61730315 is an apocalyptic number.

61730315 is a deficient number, since it is larger than the sum of its proper divisors (17522677).

61730315 is a wasteful number, since it uses less digits than its factorization.

61730315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7606.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 61730315 is about 7856.8641963572. The cubic root of 61730315 is about 395.2144645324.

The spelling of 61730315 in words is "sixty-one million, seven hundred thirty thousand, three hundred fifteen".