61770490 has 8 divisors (see below), whose sum is σ = 111186900. Its totient is φ = 24708192.

The previous prime is 61770487. The next prime is 61770529. The reversal of 61770490 is 9407716.

It can be written as a sum of positive squares in 2 ways, for example, as 57653649 + 4116841 = 7593^2 + 2029^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3088515 + ... + 3088534.

Almost surely, 2^61770490 is an apocalyptic number.

61770490 is a deficient number, since it is larger than the sum of its proper divisors (49416410).

61770490 is a wasteful number, since it uses less digits than its factorization.

61770490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6177056.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 61770490 is about 7859.4204620952. The cubic root of 61770490 is about 395.3001830748.

The spelling of 61770490 in words is "sixty-one million, seven hundred seventy thousand, four hundred ninety".