61100691 has 4 divisors (see below), whose sum is σ = 81467592. Its totient is φ = 40733792.

The previous prime is 61100687. The next prime is 61100693. The reversal of 61100691 is 19600116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61100691 - 2² = 61100687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61100693) 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, 10183446 + ... + 10183451.

It is an arithmetic number, because the mean of its divisors is an integer number (20366898).

Almost surely, 2^61100691 is an apocalyptic number.

61100691 is a deficient number, since it is larger than the sum of its proper divisors (20366901).

61100691 is a wasteful number, since it uses less digits than its factorization.

61100691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20366900.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 61100691 is about 7816.6930987471. The cubic root of 61100691 is about 393.8661947831.

The spelling of 61100691 in words is "sixty-one million, one hundred thousand, six hundred ninety-one".