61228969 has 8 divisors (see below), whose sum is σ = 63748040. Its totient is φ = 58755456.

The previous prime is 61228943. The next prime is 61228991. The reversal of 61228969 is 96982216.

It can be written as a sum of positive squares in 4 ways, for example, as 41113744 + 20115225 = 6412^2 + 4485^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 61228969 - 2⁷ = 61228841 is a prime.

It is a super-2 number, since 2×61228969² = 7497973289605922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61222969) 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, 8634 + ... + 14035.

It is an arithmetic number, because the mean of its divisors is an integer number (7968505).

Almost surely, 2^61228969 is an apocalyptic number.

It is an amenable number.

61228969 is a deficient number, since it is larger than the sum of its proper divisors (2519071).

61228969 is a wasteful number, since it uses less digits than its factorization.

61228969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22779.

The product of its digits is 93312, while the sum is 43.

The square root of 61228969 is about 7824.8941845881. The cubic root of 61228969 is about 394.1416365730.

The spelling of 61228969 in words is "sixty-one million, two hundred twenty-eight thousand, nine hundred sixty-nine".