61746690 has 16 divisors (see below), whose sum is σ = 148192128. Its totient is φ = 16465776.

The previous prime is 61746689. The next prime is 61746709. The reversal of 61746690 is 9664716.

It is a super-2 number, since 2×61746690² = 7625307451912200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029082 + ... + 1029141.

It is an arithmetic number, because the mean of its divisors is an integer number (9262008).

Almost surely, 2^61746690 is an apocalyptic number.

61746690 is an abundant number, since it is smaller than the sum of its proper divisors (86445438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61746690 is a wasteful number, since it uses less digits than its factorization.

61746690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058233.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 61746690 is about 7857.9062096719. The cubic root of 61746690 is about 395.2494071950.

The spelling of 61746690 in words is "sixty-one million, seven hundred forty-six thousand, six hundred ninety".