61690095 has 12 divisors (see below), whose sum is σ = 106929576. Its totient is φ = 32901360.

The previous prime is 61690091. The next prime is 61690129. The reversal of 61690095 is 59009616.

It is not a de Polignac number, because 61690095 - 2² = 61690091 is a prime.

It is a super-2 number, since 2×61690095² = 7611335642218050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61690091) 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, 685401 + ... + 685490.

It is an arithmetic number, because the mean of its divisors is an integer number (8910798).

Almost surely, 2^61690095 is an apocalyptic number.

61690095 is a deficient number, since it is larger than the sum of its proper divisors (45239481).

61690095 is a wasteful number, since it uses less digits than its factorization.

61690095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370902 (or 1370899 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 61690095 is about 7854.3042339853. The cubic root of 61690095 is about 395.1286127149.

The spelling of 61690095 in words is "sixty-one million, six hundred ninety thousand, ninety-five".