61007669 has 4 divisors (see below), whose sum is σ = 62426496. Its totient is φ = 59588844.

The previous prime is 61007663. The next prime is 61007693. The reversal of 61007669 is 96670016.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61007669 - 2¹² = 61003573 is a prime.

It is a super-2 number, since 2×61007669² = 7443871353627122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61007663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 709349 + ... + 709434.

It is an arithmetic number, because the mean of its divisors is an integer number (15606624).

Almost surely, 2^61007669 is an apocalyptic number.

It is an amenable number.

61007669 is a deficient number, since it is larger than the sum of its proper divisors (1418827).

61007669 is a wasteful number, since it uses less digits than its factorization.

61007669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418826.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 61007669 is about 7810.7406178928. The cubic root of 61007669 is about 393.6662143386. Note that the first 3 decimals are identical.

The spelling of 61007669 in words is "sixty-one million, seven thousand, six hundred sixty-nine".