61499705 has 8 divisors (see below), whose sum is σ = 73962504. Its totient is φ = 49091200.

The previous prime is 61499701. The next prime is 61499731. The reversal of 61499705 is 50799416.

It can be written as a sum of positive squares in 4 ways, for example, as 1530169 + 59969536 = 1237^2 + 7744^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61499705 - 2² = 61499701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61499701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11036 + ... + 15645.

It is an arithmetic number, because the mean of its divisors is an integer number (9245313).

Almost surely, 2^61499705 is an apocalyptic number.

It is an amenable number.

61499705 is a deficient number, since it is larger than the sum of its proper divisors (12462799).

61499705 is a wasteful number, since it uses less digits than its factorization.

61499705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27147.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 61499705 is about 7842.1747621435. The cubic root of 61499705 is about 394.7217075195.

The spelling of 61499705 in words is "sixty-one million, four hundred ninety-nine thousand, seven hundred five".