61730290 has 16 divisors (see below), whose sum is σ = 111216960. Its totient is φ = 24669360.

The previous prime is 61730287. The next prime is 61730293. The reversal of 61730290 is 9203716.

It is an interprime number because it is at equal distance from previous prime (61730287) and next prime (61730293).

It is not an unprimeable number, because it can be changed into a prime (61730293) 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, 12475 + ... + 16705.

It is an arithmetic number, because the mean of its divisors is an integer number (6951060).

Almost surely, 2^61730290 is an apocalyptic number.

61730290 is a deficient number, since it is larger than the sum of its proper divisors (49486670).

61730290 is a wasteful number, since it uses less digits than its factorization.

61730290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5697.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 61730290 is about 7856.8626053915. The cubic root of 61730290 is about 395.2144111801.

The spelling of 61730290 in words is "sixty-one million, seven hundred thirty thousand, two hundred ninety".