61652290 has 24 divisors (see below), whose sum is σ = 129093372. Its totient is φ = 21137760.

The previous prime is 61652267. The next prime is 61652291. The reversal of 61652290 is 9225616.

It can be written as a sum of positive squares in 2 ways, for example, as 60047001 + 1605289 = 7749^2 + 1267^2 .

It is not an unprimeable number, because it can be changed into a prime (61652291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62421 + ... + 63400.

Almost surely, 2^61652290 is an apocalyptic number.

61652290 is an abundant number, since it is smaller than the sum of its proper divisors (67441082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61652290 is a wasteful number, since it uses less digits than its factorization.

61652290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125842 (or 125835 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 61652290 is about 7851.8972229647. The cubic root of 61652290 is about 395.0478818204.

The spelling of 61652290 in words is "sixty-one million, six hundred fifty-two thousand, two hundred ninety".