61947069 has 8 divisors (see below), whose sum is σ = 83053152. Its totient is φ = 41069520.

The previous prime is 61947059. The next prime is 61947091. The reversal of 61947069 is 96074916.

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

It is not a de Polignac number, because 61947069 - 2¹⁵ = 61914301 is a prime.

It is a super-2 number, since 2×61947069² = 7674878715381522, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61947069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61947029) 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, 56499 + ... + 57584.

It is an arithmetic number, because the mean of its divisors is an integer number (10381644).

Almost surely, 2^61947069 is an apocalyptic number.

It is an amenable number.

61947069 is a deficient number, since it is larger than the sum of its proper divisors (21106083).

61947069 is a wasteful number, since it uses less digits than its factorization.

61947069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114267.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 61947069 is about 7870.6460344752. The cubic root of 61947069 is about 395.6764970937.

The spelling of 61947069 in words is "sixty-one million, nine hundred forty-seven thousand, sixty-nine".