61193290 has 8 divisors (see below), whose sum is σ = 110147940. Its totient is φ = 24477312.

The previous prime is 61193273. The next prime is 61193303. The reversal of 61193290 is 9239116.

It can be written as a sum of positive squares in 2 ways, for example, as 55935441 + 5257849 = 7479^2 + 2293^2 .

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, 3059655 + ... + 3059674.

Almost surely, 2^61193290 is an apocalyptic number.

61193290 is a deficient number, since it is larger than the sum of its proper divisors (48954650).

61193290 is a wasteful number, since it uses less digits than its factorization.

61193290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6119336.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 61193290 is about 7822.6140132311. The cubic root of 61193290 is about 394.0650643663.

It can be divided in two parts, 6119 and 3290, that added together give a square (9409 = 97²).

The spelling of 61193290 in words is "sixty-one million, one hundred ninety-three thousand, two hundred ninety".