136920464 has 10 divisors (see below), whose sum is σ = 265283430. Its totient is φ = 68460224.

The previous prime is 136920409. The next prime is 136920473. The reversal of 136920464 is 464029631.

It can be written as a sum of positive squares in only one way, i.e., 69022864 + 67897600 = 8308^2 + 8240^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4278749 + ... + 4278780.

It is an arithmetic number, because the mean of its divisors is an integer number (26528343).

Almost surely, 2^136920464 is an apocalyptic number.

It is an amenable number.

136920464 is a deficient number, since it is larger than the sum of its proper divisors (128362966).

136920464 is an equidigital number, since it uses as much as digits as its factorization.

136920464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8557537 (or 8557531 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 136920464 is about 11701.3018079186. The cubic root of 136920464 is about 515.4138929327.

The spelling of 136920464 in words is "one hundred thirty-six million, nine hundred twenty thousand, four hundred sixty-four".