61317370 has 32 divisors (see below), whose sum is σ = 116887680. Its totient is φ = 23094720.

The previous prime is 61317367. The next prime is 61317409. The reversal of 61317370 is 7371316.

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, 33499 + ... + 35281.

It is an arithmetic number, because the mean of its divisors is an integer number (3652740).

Almost surely, 2^61317370 is an apocalyptic number.

61317370 is a deficient number, since it is larger than the sum of its proper divisors (55570310).

61317370 is a wasteful number, since it uses less digits than its factorization.

61317370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990.

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 61317370 is about 7830.5408497753. The cubic root of 61317370 is about 394.3312296178.

Adding to 61317370 its reverse (7371316), we get a palindrome (68688686).

The spelling of 61317370 in words is "sixty-one million, three hundred seventeen thousand, three hundred seventy".